feat: add 'back/front end' in curriculum (#42596)
* chore: rename APIs and Microservices to include "Backend" (#42515) * fix typo * fix typo * undo change * Corrected grammar mistake Corrected a grammar mistake by removing a comma. * change APIs and Microservices cert title * update title * Change APIs and Microservices certi title * Update translations.json * update title * feat(curriculum): rename apis and microservices cert * rename folder structure * rename certificate * rename learn Markdown * apis-and-microservices -> back-end-development-and-apis * update backend meta * update i18n langs and cypress test Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * fix: add development to front-end libraries (#42512) * fix: added-the-word-Development-to-front-end-libraries * fix/added-the-word-Development-to-front-end-libraries * fix/added-word-development-to-front-end-libraries-in-other-related-files * fix/added-the-word-Development-to-front-end-and-all-related-files * fix/removed-typos-from-last-commit-in-index.md * fix/reverted-changes-that-i-made-to-dependecies * fix/removed xvfg * fix/reverted changes that i made to package.json * remove unwanted changes * front-end-development-libraries changes * rename backend certSlug and README * update i18n folder names and keys * test: add legacy path redirect tests This uses serve.json from the client-config repo, since we currently use that in production * fix: create public dir before moving serve.json * fix: add missing script * refactor: collect redirect tests * test: convert to cy.location for stricter tests * rename certificate folder to 00-certificates * change crowdin config to recognise new certificates location * allow translations to be used Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com> * add forwards slashes to path redirects * fix cypress path tests again * plese cypress * fix: test different challenge Okay so I literally have no idea why this one particular challenge fails in Cypress Firefox ONLY. Tom and I paired and spun a full build instance and confirmed in Firefox the page loads and redirects as expected. Changing to another bootstrap challenge passes Cypress firefox locally. Absolutely boggled by this. AAAAAAAAAAAAAAA * fix: separate the test Okay apparently the test does not work unless we separate it into a different `it` statement. >:( >:( >:( >:( Co-authored-by: Sujal Gupta <55016909+heysujal@users.noreply.github.com> Co-authored-by: Noor Fakhry <65724923+NoorFakhry@users.noreply.github.com> Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com> Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com>
This commit is contained in:
Shaun Hamilton
GitHub
@ -0,0 +1,131 @@
|
||||
---
|
||||
id: 564944c91be2204b269d51e3
|
||||
title: 使用 jQuery 更改元素內部的文本
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challengeType: 6
|
||||
forumTopicId: 16773
|
||||
dashedName: change-text-inside-an-element-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
可以通過 jQuery 改變元素開始和結束標籤之間的文本。 甚至改變 HTML 標籤。
|
||||
|
||||
jQuery 有一個 `.html()` 函數，能用其在標籤裏添加 HTML 標籤和文本， 函數提供的內容將完全替換之前標籤的內容。
|
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|
||||
下面是重寫並強調標題文本的代碼：
|
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|
||||
```js
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$("h3").html("<em>jQuery Playground</em>");
|
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```
|
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|
||||
jQuery 還有一個類似的函數 `.text()`，可以在不添加標籤的前提下改變標籤內的文本。 換句話說，這個函數不會評估傳遞給它的任何 HTML 標記，而是將其視爲要替換現有內容的文本。
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|
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給 id 爲 `target4` 的按鈕的文本添加強調效果。
|
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|
||||
查看這篇[關於 <em> 的文章](https://www.freecodecamp.org/news/html-elements-explained-what-are-html-tags/#em-element)來了解更多 `<i>` 和 `<em>` 的區別和用法。
|
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|
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注意，`<i>` 標籤雖然傳統上用來強調文本，但此後常用作圖標的標籤。 `<em>` 標籤作爲強調標籤現在已被廣泛接受。 可以使用任意一種完成這個挑戰。
|
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|
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# --hints--
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|
||||
應該通過添加 HTML 標籤強調 `target4` 按鈕中的文本。
|
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|
||||
```js
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assert.isTrue(
|
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/<em>|<i>\s*#target4\s*<\/em>|<\/i>/gi.test($('#target4').html())
|
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);
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```
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文本應該保持不變。
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|
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```js
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||||
assert($('#target4') && $('#target4').text().trim() === '#target4');
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```
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|
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不應該改變其它任何文本內容。
|
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|
||||
```js
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assert.isFalse(/<em>|<i>/gi.test($('h3').html()));
|
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```
|
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|
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應該使用 `.html()` 方法而不是 `.text()` 方法。
|
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|
||||
```js
|
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assert(code.match(/\.html\(/g));
|
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```
|
||||
|
||||
應該使用 jQuery 選取 `button id="target4"`。
|
||||
|
||||
```js
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assert(code.match(/\$\(\s*?(\"|\')#target4(\"|\')\s*?\)\.html\(/));
|
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```
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|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
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$(document).ready(function() {
|
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$("#target1").css("color", "red");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
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<div class="col-xs-6">
|
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<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
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<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
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<div class="col-xs-6">
|
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<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
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<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target4").html('<em>#target4</em>');
|
||||
});
|
||||
</script>
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,119 @@
|
||||
---
|
||||
id: bad87fee1348bd9aed908826
|
||||
title: 使用 jQuery 更改元素的 CSS
|
||||
challengeType: 6
|
||||
forumTopicId: 16776
|
||||
required:
|
||||
-
|
||||
link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
|
||||
dashedName: change-the-css-of-an-element-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
也能用 jQuery 直接改變 HTML 標籤的 CSS。
|
||||
|
||||
jQuery 有一個 `.css()` 方法，能改變標籤的 CSS。
|
||||
|
||||
下面的代碼效果是把顏色變藍：
|
||||
|
||||
```js
|
||||
$("#target1").css("color", "blue");
|
||||
```
|
||||
|
||||
這與通常的 CSS 聲明略有不同，因爲這個 CSS 屬性和它的值在英文引號裏，並且它們用逗號而不是冒號間隔開。
|
||||
|
||||
刪除 jQuery 選擇器，留下一個空的 `document ready function` 。
|
||||
|
||||
選擇 `target1`，並將其顏色更改爲紅色。
|
||||
|
||||
# --hints--
|
||||
|
||||
`target1` 元素應該有紅色文本。
|
||||
|
||||
```js
|
||||
assert($('#target1').css('color') === 'rgb(255, 0, 0)');
|
||||
```
|
||||
|
||||
應該僅用 jQuery 給元素添加這些 class。
|
||||
|
||||
```js
|
||||
assert(!code.match(/class.*animated/g));
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("button").addClass("animated bounce");
|
||||
$(".well").addClass("animated shake");
|
||||
$("#target3").addClass("animated fadeOut");
|
||||
$("button").removeClass("btn-default");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("button").addClass("animated bounce");
|
||||
$(".well").addClass("animated shake");
|
||||
$("#target3").addClass("animated fadeOut");
|
||||
$("button").removeClass("btn-default");
|
||||
$("#target1").css("color", "red");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,121 @@
|
||||
---
|
||||
id: bad87fee1348bd9aed508826
|
||||
title: 使用 jQuery 克隆元素
|
||||
challengeType: 6
|
||||
forumTopicId: 16780
|
||||
dashedName: clone-an-element-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
除了移動標籤，也可以把元素從一個地方複製到另一地方。
|
||||
|
||||
jQuery 有一個 `clone()` 方法，可以複製標籤。
|
||||
|
||||
例如，如果想把 `target2` 從 `left-well` 複製到 `right-well`，可以設置如下：
|
||||
|
||||
```js
|
||||
$("#target2").clone().appendTo("#right-well");
|
||||
```
|
||||
|
||||
是否注意到這兩個 jQuery 函數連在一起了？ 這被稱爲<dfn>鏈式調用（function chaining）</dfn>，是一種用 jQuery 實現效果的簡便方法。
|
||||
|
||||
克隆 `target5` 元素，並將其附加到 `left-well` 。
|
||||
|
||||
# --hints--
|
||||
|
||||
`target5` 元素應該在 `right-well` 裏面。
|
||||
|
||||
```js
|
||||
assert($('#right-well').children('#target5').length > 0);
|
||||
```
|
||||
|
||||
應該克隆 `target5` 元素，並放在 `left-well` 裏面。
|
||||
|
||||
```js
|
||||
assert($('#left-well').children('#target5').length > 0);
|
||||
```
|
||||
|
||||
應該僅用 jQuery 移動這些元素。
|
||||
|
||||
```js
|
||||
assert(!code.match(/class.*animated/g));
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
$("#target5").clone().appendTo("#left-well");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,125 @@
|
||||
---
|
||||
id: bad87fee1348bd9aeda08726
|
||||
title: 刪除 jQuery 函數
|
||||
challengeType: 6
|
||||
forumTopicId: 17561
|
||||
required:
|
||||
-
|
||||
link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
|
||||
dashedName: delete-your-jquery-functions
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
這些動畫開始看起來很酷，但是有時可能會讓用戶分心。
|
||||
|
||||
請刪除 `document ready function` 內的三個 jQuery 函數，但保留 `document ready function` 本身。
|
||||
|
||||
# --hints--
|
||||
|
||||
應該刪除 `document ready function` 中的三個 jQuery 函數。
|
||||
|
||||
```js
|
||||
assert(code.match(/\{\s*\}\);/g));
|
||||
```
|
||||
|
||||
應該保持 `script` 標籤不變。
|
||||
|
||||
```js
|
||||
assert(code.match(/<script>/g));
|
||||
```
|
||||
|
||||
應該保持 `$(document).ready(function() {` 在 `script` 標籤的開頭不變。
|
||||
|
||||
```js
|
||||
assert(code.match(/\$\(document\)\.ready\(function\(\)\s?\{/g));
|
||||
```
|
||||
|
||||
應該保持 `document.ready` function 用 `})` 閉合。
|
||||
|
||||
```js
|
||||
assert(code.match(/.*\s*\}\);/g));
|
||||
```
|
||||
|
||||
應該保持 `script` 標籤閉合。
|
||||
|
||||
```js
|
||||
assert(
|
||||
code.match(/<\/script>/g) &&
|
||||
code.match(/<script/g) &&
|
||||
code.match(/<\/script>/g).length === code.match(/<script/g).length
|
||||
);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("button").addClass("animated bounce");
|
||||
$(".well").addClass("animated shake");
|
||||
$("#target3").addClass("animated fadeOut");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,120 @@
|
||||
---
|
||||
id: bad87fee1348bd9aed808826
|
||||
title: 使用 jQuery 禁用元素
|
||||
challengeType: 6
|
||||
forumTopicId: 17563
|
||||
dashedName: disable-an-element-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
還能用 jQuery 改變 HTML 標籤的非 CSS 屬性， 例如：禁用按鈕。
|
||||
|
||||
當禁用按鈕時，它將變成灰色並無法點擊。
|
||||
|
||||
jQuery 有一個 `.prop()` 方法，可以用其調整標籤的屬性。
|
||||
|
||||
下面是禁用所有的按鈕的代碼：
|
||||
|
||||
```js
|
||||
$("button").prop("disabled", true);
|
||||
```
|
||||
|
||||
僅禁用 `target1` 按鈕。
|
||||
|
||||
# --hints--
|
||||
|
||||
`target1` 按鈕應該被禁用。
|
||||
|
||||
```js
|
||||
assert(
|
||||
$('#target1') &&
|
||||
$('#target1').prop('disabled') &&
|
||||
code.match(/["']disabled["'],( true|true)/g)
|
||||
);
|
||||
```
|
||||
|
||||
不應該禁用其它的按鈕。
|
||||
|
||||
```js
|
||||
assert($('#target2') && !$('#target2').prop('disabled'));
|
||||
```
|
||||
|
||||
應該僅用 jQuery 給元素添加這些 class。
|
||||
|
||||
```js
|
||||
assert(!code.match(/disabled[^<]*>/g));
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,118 @@
|
||||
---
|
||||
id: bad87fee1348bd9acdd08826
|
||||
title: 瞭解 script 和 document.ready 是如何工作的
|
||||
challengeType: 6
|
||||
forumTopicId: 18224
|
||||
dashedName: learn-how-script-tags-and-document-ready-work
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
馬上就要學習有史以來最受歡迎的 JavaScript 框架——jQuery 了。
|
||||
|
||||
在使用 jQuery 之前，需要在 HTML 頁面中添加一些東西。
|
||||
|
||||
首先，在頁面頂部添加 `script` 標籤， 記得在後面爲它添加結束標籤。
|
||||
|
||||
瀏覽器會運行 `script` 標籤所有的 JavaScript 腳本包括 jQuery。
|
||||
|
||||
在 `script` 標籤中添加代碼 `$(document).ready(function() {`。 然後在後面（仍在該 `script` 標籤內）用 `});` 閉合它。
|
||||
|
||||
稍後將詳細介紹 `functions`， 現在需要知道的是，只要瀏覽器加載頁面，`function` 中放入的代碼就會運行。
|
||||
|
||||
有一點很重要，如果沒有 `document ready function`，代碼將在 HTML 頁面呈現之前運行，這可能會導致錯誤。
|
||||
|
||||
# --hints--
|
||||
|
||||
應該創建一個 `script` 標籤，確保其有效並具有閉合標籤。
|
||||
|
||||
```js
|
||||
assert(
|
||||
code.match(/<\/script\s*>/g) &&
|
||||
code.match(
|
||||
/<script(\sasync|\sdefer)*(\s(charset|src|type)\s*=\s*["\"]+[^"\"]*["\"]+)*(\sasync|\sdefer)*\s*>/g
|
||||
) &&
|
||||
code.match(/<\/script\s*>/g).length ===
|
||||
code.match(
|
||||
/<script(\sasync|\sdefer)*(\s(charset|src|type)\s*=\s*["\"]+[^"\"]*["\"]+)*(\sasync|\sdefer)*\s*>/g
|
||||
).length
|
||||
);
|
||||
```
|
||||
|
||||
應該在 `script` 的開頭添加 `$(document).ready(function() {`。
|
||||
|
||||
```js
|
||||
assert(
|
||||
code.match(
|
||||
/\$\s*?\(\s*?document\s*?\)\.ready\s*?\(\s*?function\s*?\(\s*?\)\s*?\{/g
|
||||
)
|
||||
);
|
||||
```
|
||||
|
||||
應該用 `});` 閉合 `$(document).ready(function() {` 函數。
|
||||
|
||||
```js
|
||||
assert(code.match(/\n*?\s*?\}\s*?\);/g));
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
});
|
||||
</script>
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,109 @@
|
||||
---
|
||||
id: bad87fee1348bd9aed708826
|
||||
title: 使用 jQuery 刪除元素
|
||||
challengeType: 6
|
||||
forumTopicId: 18262
|
||||
dashedName: remove-an-element-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
現在學習用 jQuery 從頁面移除 HTML 標籤。
|
||||
|
||||
jQuery 有一個 `.remove()` 方法，能完全移除 HTML 標籤。
|
||||
|
||||
用 `.remove()` 方法從頁面移除 `#target4` 元素。
|
||||
|
||||
# --hints--
|
||||
|
||||
應該用 jQuery 從頁面中移除 `target4`標籤。
|
||||
|
||||
```js
|
||||
assert(
|
||||
$('#target4').length === 0 && code.match(/\$\(["']#target4["']\).remove\(\)/g)
|
||||
);
|
||||
```
|
||||
|
||||
應該僅用 jQuery 移除該標籤。
|
||||
|
||||
```js
|
||||
assert(
|
||||
code.match(/id="target4/g) &&
|
||||
!code.match(/<!--.*id="target4".*-->/g) &&
|
||||
$('#right-well').length > 0
|
||||
);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,122 @@
|
||||
---
|
||||
id: bad87fee1348bd9aed918626
|
||||
title: 使用 jQuery 從元素中移除 class
|
||||
challengeType: 6
|
||||
forumTopicId: 18264
|
||||
required:
|
||||
-
|
||||
link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
|
||||
dashedName: remove-classes-from-an-element-with-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
和用 jQuery 的 `addClass()` 方法給標籤添加類一樣，也可以利用 jQuery 的 `removeClass()` 方法移除它們。
|
||||
|
||||
下面是爲指定按鈕執行上面的操作的代碼：
|
||||
|
||||
```js
|
||||
$("#target2").removeClass("btn-default");
|
||||
```
|
||||
|
||||
請把所有 `button` 元素的 `btn-default` class 移除。
|
||||
|
||||
# --hints--
|
||||
|
||||
應該移除所有 `button` 元素 `btn-default` class。
|
||||
|
||||
```js
|
||||
assert($('.btn-default').length === 0);
|
||||
```
|
||||
|
||||
應該僅用 jQuery 從元素中移除 class。
|
||||
|
||||
```js
|
||||
assert(code.match(/btn btn-default/g));
|
||||
```
|
||||
|
||||
應該僅移除 `btn-default` class。
|
||||
|
||||
```js
|
||||
assert(
|
||||
code.match(
|
||||
/\.[\v\s]*removeClass[\s\v]*\([\s\v]*('|")\s*btn-default\s*('|")[\s\v]*\)/gm
|
||||
)
|
||||
);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("button").addClass("animated bounce");
|
||||
$(".well").addClass("animated shake");
|
||||
$("#target3").addClass("animated fadeOut");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("button").addClass("animated bounce");
|
||||
$(".well").addClass("animated shake");
|
||||
$("#target3").addClass("animated fadeOut");
|
||||
$("button").removeClass("btn-default");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,144 @@
|
||||
---
|
||||
id: bad87fee1348bd9aed108826
|
||||
title: 使用 jQuery 選擇元素的特定子元素
|
||||
challengeType: 6
|
||||
forumTopicId: 18315
|
||||
required:
|
||||
-
|
||||
link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
|
||||
dashedName: target-a-specific-child-of-an-element-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
已經看到了 id 屬性對於 jQuery 選擇器選取標籤的便利， 但這並不適用於所有情景。
|
||||
|
||||
幸運的是，jQuery 有一些其他的方法可以選取正確的標籤。
|
||||
|
||||
jQuery 可以用 CSS 選擇器（CSS Selectors）選取標籤。 `target:nth-child(n)` CSS 選擇器可以選取指定 class 或者元素類型的的第 n 個標籤。
|
||||
|
||||
下面的代碼展示了給每個區域（well）的第 3 個標籤設置彈跳（bounce）動畫效果：
|
||||
|
||||
```js
|
||||
$(".target:nth-child(3)").addClass("animated bounce");
|
||||
```
|
||||
|
||||
給 well 元素的第二個子元素添加彈跳（bounce）動畫效果。 你必須選擇具有 `target` class 的元素子項。
|
||||
|
||||
# --hints--
|
||||
|
||||
`target` 元素中的第二個元素應該有彈跳（bounce）動畫效果。
|
||||
|
||||
```js
|
||||
assert(
|
||||
$('.target:nth-child(2)').hasClass('animated') &&
|
||||
$('.target:nth-child(2)').hasClass('bounce')
|
||||
);
|
||||
```
|
||||
|
||||
應該僅兩個元素有彈跳（bounce）動畫效果。
|
||||
|
||||
```js
|
||||
assert($('.animated.bounce').length === 2);
|
||||
```
|
||||
|
||||
你應該使用 `:nth-child()` 選擇器修改這些元素。
|
||||
|
||||
```js
|
||||
assert(code.match(/\:nth-child\(/g));
|
||||
```
|
||||
|
||||
應該僅用 jQuery 給元素添加 class。
|
||||
|
||||
```js
|
||||
assert(
|
||||
code.match(/\$\(".target:nth-child\(2\)"\)/g) ||
|
||||
code.match(/\$\('.target:nth-child\(2\)'\)/g) ||
|
||||
code.match(/\$\(".target"\).filter\(":nth-child\(2\)"\)/g) ||
|
||||
code.match(/\$\('.target'\).filter\(':nth-child\(2\)'\)/g)
|
||||
);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
$("#target5").clone().appendTo("#left-well");
|
||||
$("#target1").parent().css("background-color", "red");
|
||||
$("#right-well").children().css("color", "orange");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
$("#target5").clone().appendTo("#left-well");
|
||||
$("#target1").parent().css("background-color", "red");
|
||||
$("#right-well").children().css("color", "orange");
|
||||
$(".target:nth-child(2)").addClass("animated bounce");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,113 @@
|
||||
---
|
||||
id: bad87fee1348bd9aedc08826
|
||||
title: 使用 jQuery class 選擇器選擇元素
|
||||
challengeType: 6
|
||||
forumTopicId: 18316
|
||||
required:
|
||||
-
|
||||
link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
|
||||
dashedName: target-elements-by-class-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
如何使所有的 `button` 標籤都有彈跳的動畫效果？ 用 `$("button")` 選取所有的 button 標籤，並用 `.addClass("animated bounce");` 給其添加一些 CSS 屬性。
|
||||
|
||||
jQuery 的 `.addClass()` 方法用來給標籤添加類。
|
||||
|
||||
首先，使用 `$(".well")` 選取類爲 `well` 的 `div` 標籤。
|
||||
|
||||
值得注意的是，和 CSS 聲明一樣，在類名前需要添加 `.`。
|
||||
|
||||
然後，用 jQuery 的 `.addClass()` 方法添加 `animated` 和 `shake` class。
|
||||
|
||||
例如，在 `document ready function` 中添加下面的代碼，使所有類爲 `text-primary` 的標籤抖動：
|
||||
|
||||
```js
|
||||
$(".text-primary").addClass("animated shake");
|
||||
```
|
||||
|
||||
# --hints--
|
||||
|
||||
應該用 jQuery 的 `addClass()` 方法給所有 class 爲 `well` 的元素添加 `animated` 和 `shake` class。
|
||||
|
||||
```js
|
||||
assert($('.well').hasClass('animated') && $('.well').hasClass('shake'));
|
||||
```
|
||||
|
||||
應該僅用 jQuery 給元素添加這些 class。
|
||||
|
||||
```js
|
||||
assert(!code.match(/class\.\*animated/g));
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("button").addClass("animated bounce");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("button").addClass("animated bounce");
|
||||
$(".well").addClass("animated shake");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,123 @@
|
||||
---
|
||||
id: bad87fee1348bd9aeda08826
|
||||
title: 使用 jQuery id 選擇器選擇元素
|
||||
challengeType: 6
|
||||
forumTopicId: 18317
|
||||
required:
|
||||
-
|
||||
link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
|
||||
dashedName: target-elements-by-id-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
也能通過 id 屬性選取標籤。
|
||||
|
||||
首先，用 `$("#target3")` 選擇器選取 id 爲 `target3` 的 `button` 標籤。
|
||||
|
||||
注意，和 CSS 聲明一樣，在 id 名前需要添加 `#`。
|
||||
|
||||
然後，用 jQuery 的 `.addClass()` 方法添加 `animated` 和 `fadeOut` 類。
|
||||
|
||||
下面的代碼的效果是使 id 爲 `target6` 的 `button` 標籤淡出：
|
||||
|
||||
```js
|
||||
$("#target6").addClass("animated fadeOut");
|
||||
```
|
||||
|
||||
# --hints--
|
||||
|
||||
應該選擇 `id` 爲 `target3` 的 `button` 元素，使用 jQuery 的 `addClass()` 函數給它添加 `animated` class。
|
||||
|
||||
```js
|
||||
assert($('#target3').hasClass('animated'));
|
||||
```
|
||||
|
||||
應該選中 id 爲 `target3` 的元素，使用 jQuery 的 `addClass()` 函數給它添加 `fadeOut` class。
|
||||
|
||||
```js
|
||||
assert(
|
||||
($('#target3').hasClass('fadeOut') || $('#target3').hasClass('fadeout')) &&
|
||||
code.match(/\$\(\s*.#target3.\s*\)/g)
|
||||
);
|
||||
```
|
||||
|
||||
應該僅用 jQuery 給元素添加這些 class。
|
||||
|
||||
```js
|
||||
assert(!code.match(/class.*animated/g));
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("button").addClass("animated bounce");
|
||||
$(".well").addClass("animated shake");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("button").addClass("animated bounce");
|
||||
$(".well").addClass("animated shake");
|
||||
$("#target3").addClass("animated fadeOut");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,139 @@
|
||||
---
|
||||
id: bad87fee1348bd9aed008826
|
||||
title: 使用 jQuery 選擇偶數元素
|
||||
challengeType: 6
|
||||
forumTopicId: 18318
|
||||
required:
|
||||
-
|
||||
link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
|
||||
dashedName: target-even-elements-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
也可以用基於位置的奇 `:odd` 和偶 `:even` 選擇器選取標籤。
|
||||
|
||||
注意，jQuery 是零索引（zero-indexed）的，這意味着第 1 個標籤的位置編號是 0。 這有點混亂和反常——`:odd` 表示選擇第 2 個標籤（位置編號 1），第 4 個標籤（位置編號 3）……等等，以此類推。
|
||||
|
||||
下面的代碼展示了選取所有 `target` class 元素的奇數元素並設置 sheke 效果：
|
||||
|
||||
```js
|
||||
$(".target:odd").addClass("animated shake");
|
||||
```
|
||||
|
||||
嘗試選取所有 `target` class 元素的偶數元素並給它們設置 `animated` 和 `shake` class。 請記住， **偶數**指的是基於零系統的元素的位置。
|
||||
|
||||
# --hints--
|
||||
|
||||
所有的偶數位置上的 `target` 元素都應該抖動。
|
||||
|
||||
```js
|
||||
assert(
|
||||
$('.target:even').hasClass('animated') && $('.target:even').hasClass('shake')
|
||||
);
|
||||
```
|
||||
|
||||
應該使用 `:even` 選擇器修改這些元素。
|
||||
|
||||
```js
|
||||
assert(code.match(/\:even/g));
|
||||
```
|
||||
|
||||
應該僅用 jQuery 給元素添加 class。
|
||||
|
||||
```js
|
||||
assert(
|
||||
code.match(/\$\(".target:even"\)/g) ||
|
||||
code.match(/\$\('.target:even'\)/g) ||
|
||||
code.match(/\$\(".target"\).filter\(":even"\)/g) ||
|
||||
code.match(/\$\('.target'\).filter\(':even'\)/g)
|
||||
);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
$("#target5").clone().appendTo("#left-well");
|
||||
$("#target1").parent().css("background-color", "red");
|
||||
$("#right-well").children().css("color", "orange");
|
||||
$("#left-well").children().css("color", "green");
|
||||
$(".target:nth-child(2)").addClass("animated bounce");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
$("#target5").clone().appendTo("#left-well");
|
||||
$("#target1").parent().css("background-color", "red");
|
||||
$("#right-well").children().css("color", "orange");
|
||||
$("#left-well").children().css("color", "green");
|
||||
$(".target:nth-child(2)").addClass("animated bounce");
|
||||
$(".target:even").addClass("animated shake");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,118 @@
|
||||
---
|
||||
id: bad87fee1348bd9bedc08826
|
||||
title: 使用 jQuery 選擇器選擇元素
|
||||
challengeType: 6
|
||||
forumTopicId: 18319
|
||||
required:
|
||||
-
|
||||
link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
|
||||
dashedName: target-html-elements-with-selectors-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
現在我們有一個 `document ready` 函數。
|
||||
|
||||
首先，完成第一個 jQuery 語句。 所有的 jQuery 函數都以 `$` 開頭，這個符號通常被稱爲美元符號（dollar sign operator）或 bling。
|
||||
|
||||
jQuery 通常選取並操作帶有<dfn>選擇器（selector）</dfn>的 HTML 標籤。
|
||||
|
||||
比如，想要給 `button` 元素添加跳躍效果。 只需要在 document ready 函數內添加如下代碼：
|
||||
|
||||
```js
|
||||
$("button").addClass("animated bounce");
|
||||
```
|
||||
|
||||
請注意，我們已經在後臺引入了 jQuery 庫和 Animate.css 庫，所以你可以在編輯器裏直接使用它們。 你將使用 jQuery 將 Animate.css `bounce` class 應用於 `button` 元素。
|
||||
|
||||
# --hints--
|
||||
|
||||
應該用 jQuery 的 `addClass()` 函數給 `button` 元素添加 `animated` 和 `bounce` class。
|
||||
|
||||
```js
|
||||
assert($('button').hasClass('animated') && $('button').hasClass('bounce'));
|
||||
```
|
||||
|
||||
應該僅用 jQuery 給元素添加 class。
|
||||
|
||||
```js
|
||||
assert(!code.match(/class.*animated/g));
|
||||
```
|
||||
|
||||
jQuery 代碼應該放在 `$(document).ready();` 函數裏。
|
||||
|
||||
```js
|
||||
assert(
|
||||
code.replace(/\s/g, '').match(/\$\(document\)\.ready\(function\(\)\{\$/g)
|
||||
);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("button").addClass("animated bounce");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,125 @@
|
||||
---
|
||||
id: bad87fee1348bd9aed208826
|
||||
title: 使用 jQuery 選擇元素的子元素
|
||||
challengeType: 6
|
||||
forumTopicId: 18320
|
||||
dashedName: target-the-children-of-an-element-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
把 HTML 標籤放到另一個級別的標籤裏，這些 HTML 標籤被稱爲該標籤的<dfn>子標籤（children element）</dfn>。 例如，本次挑戰中文本爲 `#target1`、`#target2` 和 `#target3` 的按鈕都是 `<div class="well" id="left-well">` 標籤的子標籤。
|
||||
|
||||
jQuery 有一個 `children()` 方法，可以訪問被選取標籤的子標籤。
|
||||
|
||||
下面的代碼展示了用 `children()` 方法把 `left-well` 標籤的子標籤的顏色設置成 `blue`（藍色）：
|
||||
|
||||
```js
|
||||
$("#left-well").children().css("color", "blue")
|
||||
```
|
||||
|
||||
# --instructions--
|
||||
|
||||
將 `right-well` 元素的所有子元素設置爲橙色（orange）。
|
||||
|
||||
# --hints--
|
||||
|
||||
`#right-well` 的所有子元素應該有橙色文本。
|
||||
|
||||
```js
|
||||
assert($('#right-well').children().css('color') === 'rgb(255, 165, 0)');
|
||||
```
|
||||
|
||||
應該用 `children()` 函數修改這些元素。
|
||||
|
||||
```js
|
||||
assert(code.match(/\.children\(\)\.css/g));
|
||||
```
|
||||
|
||||
應該僅用 jQuery 給標籤添加 class。
|
||||
|
||||
```js
|
||||
assert(code.match(/<div class="well" id="right-well">/g));
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
$("#target5").clone().appendTo("#left-well");
|
||||
$("#target1").parent().css("background-color", "red");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
$("#target5").clone().appendTo("#left-well");
|
||||
$("#target1").parent().css("background-color", "red");
|
||||
$("#right-well").children().css("color", "orange");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,140 @@
|
||||
---
|
||||
id: bad87fee1348bd9aed308826
|
||||
title: 使用 jQuery 選擇元素的父元素
|
||||
challengeType: 6
|
||||
forumTopicId: 18321
|
||||
dashedName: target-the-parent-of-an-element-using-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
每個 HTML 標籤都默認 `inherits`（繼承）其 `parent`（父標籤）的 CSS 屬性。
|
||||
|
||||
例如，`h3` 標籤 `jQuery Playground` 的父標籤是 `<div class="container-fluid">`，而這個標籤的父標籤是 `body`。
|
||||
|
||||
jQuery 有一個 `parent()` 方法，可以訪問被選取標籤的父標籤。
|
||||
|
||||
下面的代碼展示了使用 `parent()` 方法把 `left-well` 標籤的父標籤背景色設置成藍色（blue）：
|
||||
|
||||
```js
|
||||
$("#left-well").parent().css("background-color", "blue")
|
||||
```
|
||||
|
||||
把 `#target1` 元素的父元素背景色設置成紅色（red）。
|
||||
|
||||
# --hints--
|
||||
|
||||
`left-well` 元素應該有紅色的背景。
|
||||
|
||||
```js
|
||||
assert(
|
||||
$('#left-well').css('background-color') === 'red' ||
|
||||
$('#left-well').css('background-color') === 'rgb(255, 0, 0)' ||
|
||||
$('#left-well').css('background-color').toLowerCase() === '#ff0000' ||
|
||||
$('#left-well').css('background-color').toLowerCase() === '#f00'
|
||||
);
|
||||
```
|
||||
|
||||
應該用 `.parent()` 函數修改該元素。
|
||||
|
||||
```js
|
||||
assert(code.match(/\.parent\s*\(\s*\)\s*\.css/g));
|
||||
```
|
||||
|
||||
應該在 `#target1` 元素上調用 `.parent()` 方法。
|
||||
|
||||
```js
|
||||
assert(
|
||||
code.match(/\$\s*?\(\s*?(?:'|")\s*?#target1\s*?(?:'|")\s*?\)\s*?\.parent/gi)
|
||||
);
|
||||
```
|
||||
|
||||
應該僅用 jQuery 給元素添加 class。
|
||||
|
||||
```js
|
||||
assert(code.match(/<div class="well" id="left-well">/g));
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
$("#target5").clone().appendTo("#left-well");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<body>
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</body>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
$("#target5").clone().appendTo("#left-well");
|
||||
$("#target1").parent().css("background-color", "red");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<body>
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</body>
|
||||
```
|
||||
@ -0,0 +1,143 @@
|
||||
---
|
||||
id: bad87fee1348bd9aed908626
|
||||
title: 用多個 jQuery 選擇器選擇同一個元素
|
||||
challengeType: 6
|
||||
forumTopicId: 18322
|
||||
required:
|
||||
-
|
||||
link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
|
||||
dashedName: target-the-same-element-with-multiple-jquery-selectors
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
現在學寫了三種選取標籤的方法：用標籤選擇器： `$("button")`，用類選擇器：`$(".btn")` 以及用 id 選擇器：`$("#target1")` 。
|
||||
|
||||
雖然可以在單個 `.addClass()` 內添加多個類，但是我們可以用*三種不同的方式*給一種標籤添加類。
|
||||
|
||||
以三種不同的方式用 `.addClass()` 方法每次只給一種標籤添加一個類：
|
||||
|
||||
給所有的 `button` 標籤添加 `animated` 類。
|
||||
|
||||
給所有類爲 `.btn` 的 button 標籤添加 `shake` 類。
|
||||
|
||||
給所有 id 爲 `#target1` 的 button 標籤添加 `btn-primary` 類。
|
||||
|
||||
**注意：**只針對一個元素並且一次只能添加一個 class。 總之，三個選擇器最終將添加三個 class `shake`、`animated` 以及 `btn-primary` 到 `#target1` 上。
|
||||
|
||||
# --hints--
|
||||
|
||||
應該使用 `$("button")` 選擇器。
|
||||
|
||||
```js
|
||||
assert(code.match(/\$\s*?\(\s*?(?:'|")\s*?button\s*?(?:'|")/gi));
|
||||
```
|
||||
|
||||
應該使用 `$(".btn")` 選擇器。
|
||||
|
||||
```js
|
||||
assert(code.match(/\$\s*?\(\s*?(?:'|")\s*?\.btn\s*?(?:'|")/gi));
|
||||
```
|
||||
|
||||
應該使用 `$("#target1")` 選擇器。
|
||||
|
||||
```js
|
||||
assert(code.match(/\$\s*?\(\s*?(?:'|")\s*?#target1\s*?(?:'|")/gi));
|
||||
```
|
||||
|
||||
三個選擇器每個應該只添加一個類。
|
||||
|
||||
```js
|
||||
assert(
|
||||
code.match(/addClass/g) &&
|
||||
code.match(/addClass\s*?\(\s*?('|")\s*?[\w-]+\s*?\1\s*?\)/g).length > 2
|
||||
);
|
||||
```
|
||||
|
||||
`#target1` 標籤應具有 `animated`、`shake` 和 `btn-primary` 三個類。
|
||||
|
||||
```js
|
||||
assert(
|
||||
$('#target1').hasClass('animated') &&
|
||||
$('#target1').hasClass('shake') &&
|
||||
$('#target1').hasClass('btn-primary')
|
||||
);
|
||||
```
|
||||
|
||||
應該僅用 jQuery 給標籤添加類。
|
||||
|
||||
```js
|
||||
assert(!code.match(/class.*animated/g));
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("button").addClass("animated");
|
||||
$(".btn").addClass("shake");
|
||||
$("#target1").addClass("btn-primary");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,117 @@
|
||||
---
|
||||
id: bad87fee1348bd9aed608826
|
||||
title: 使用 jQuery 的 appendTo 方法移動元素
|
||||
challengeType: 6
|
||||
forumTopicId: 18340
|
||||
dashedName: use-appendto-to-move-elements-with-jquery
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
現在來把標籤從一個 `div` 移動到另一個裏。
|
||||
|
||||
jQuery 有一個 `appendTo()` 方法，可以選取 HTML 標籤並將其添加到另一個標籤裏面。
|
||||
|
||||
例如，如果要把 `target4` 從 right well 移到 left well，可以設置如下：
|
||||
|
||||
```js
|
||||
$("#target4").appendTo("#left-well");
|
||||
```
|
||||
|
||||
把 `target2` 元素從 `left-well` 移動到 `right-well`。
|
||||
|
||||
# --hints--
|
||||
|
||||
`target2` 元素不應該在 `left-well` 內。
|
||||
|
||||
```js
|
||||
assert($('#left-well').children('#target2').length === 0);
|
||||
```
|
||||
|
||||
`target2` 元素應該在 `right-well` 內。
|
||||
|
||||
```js
|
||||
assert($('#right-well').children('#target2').length > 0);
|
||||
```
|
||||
|
||||
應該僅用 jQuery 移動這些標籤。
|
||||
|
||||
```js
|
||||
assert(!code.match(/class.*animated/g));
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
@ -0,0 +1,118 @@
|
||||
---
|
||||
id: bad87fee1348bd9aecb08826
|
||||
title: 使用 jQuery 修改整個頁面
|
||||
challengeType: 6
|
||||
forumTopicId: 18361
|
||||
required:
|
||||
-
|
||||
link: 'https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css'
|
||||
dashedName: use-jquery-to-modify-the-entire-page
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
目前，已經完成了 jQuery playground。 把它移除吧。
|
||||
|
||||
jQuery 也能選取 `body` 標籤。
|
||||
|
||||
這是使整個 body 淡出的代碼：`$("body").addClass("animated fadeOut");`
|
||||
|
||||
來做一些更好玩的事。 給 `body` 標籤添加 `animated` 和 `hinge` class。
|
||||
|
||||
# --hints--
|
||||
|
||||
應該給 `body` 標籤添加 `animated` 和 `hinge` class。
|
||||
|
||||
```js
|
||||
assert($('body').hasClass('animated') && $('body').hasClass('hinge'));
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
$("#target5").clone().appendTo("#left-well");
|
||||
$("#target1").parent().css("background-color", "red");
|
||||
$("#right-well").children().css("color", "orange");
|
||||
$("#left-well").children().css("color", "green");
|
||||
$(".target:nth-child(2)").addClass("animated bounce");
|
||||
$(".target:even").addClass("animated shake");
|
||||
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```html
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("#target1").css("color", "red");
|
||||
$("#target1").prop("disabled", true);
|
||||
$("#target4").remove();
|
||||
$("#target2").appendTo("#right-well");
|
||||
$("#target5").clone().appendTo("#left-well");
|
||||
$("#target1").parent().css("background-color", "red");
|
||||
$("#right-well").children().css("color", "orange");
|
||||
$("#left-well").children().css("color", "green");
|
||||
$(".target:nth-child(2)").addClass("animated bounce");
|
||||
$(".target:even").addClass("animated shake");
|
||||
$("body").addClass("animated hinge");
|
||||
});
|
||||
</script>
|
||||
|
||||
<!-- Only change code above this line -->
|
||||
|
||||
<div class="container-fluid">
|
||||
<h3 class="text-primary text-center">jQuery Playground</h3>
|
||||
<div class="row">
|
||||
<div class="col-xs-6">
|
||||
<h4>#left-well</h4>
|
||||
<div class="well" id="left-well">
|
||||
<button class="btn btn-default target" id="target1">#target1</button>
|
||||
<button class="btn btn-default target" id="target2">#target2</button>
|
||||
<button class="btn btn-default target" id="target3">#target3</button>
|
||||
</div>
|
||||
</div>
|
||||
<div class="col-xs-6">
|
||||
<h4>#right-well</h4>
|
||||
<div class="well" id="right-well">
|
||||
<button class="btn btn-default target" id="target4">#target4</button>
|
||||
<button class="btn btn-default target" id="target5">#target5</button>
|
||||
<button class="btn btn-default target" id="target6">#target6</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
```
|
||||
Reference in New Issue
Block a user