freeCodeCamp/target-html-elements-with-selectors-using-jquery.chinese.md at ff8db8ce9e8413f490626e1572e7fd09825db39c

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ZhichengChen 3b7b64feb3 fix(i18n): update Chinese translation of jquery (#38579 )

Co-authored-by: Zhicheng Chen <chenzhicheng@dayuwuxian.com>
Co-authored-by: S1ngS1ng <liuxing0514@gmail.com>

2020-09-07 13:47:51 +05:30

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Target HTML Elements with Selectors Using jQuery

link
https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css

18319

使用 jQuery 配合元素选择器选择元素

Description

接下来我们学习document ready function。首先，我们完成第一个 jQuery 语句。所有的 jQuery 函数以$开头，这个符号通常被称为美元符号（dollar sign operator）或bling。 jQuery 通常选取并操作带有选择器（selector）的 HTML 标签。例如，如果要所有button有弹性的动画效果，只需在document ready function中添加如下代码即可： $("button").addClass("animated bounce"); 请注意，为了能在编辑器里直接使用，我们已经为你在后台引入了 jQuery 库和 Animate.css 库。因此，你只需要通过 jQuery 给button元素添加bounce类就可以了。

Instructions

Tests

tests:
  - text: 用 jQuery 的<code>addClass&#40&#41</code>方法给<code>button</code>标签添加<code>animated</code>和<code>bounce</code>类。
    testString: 'assert($("button").hasClass("animated") && $("button").hasClass("bounce"));'
  - text: 仅用 jQuery 给标签添加颜色。
    testString: 'assert(!code.match(/class.*animated/g));'
  - text: jQuery 代码应该放在<code>$(document).ready();</code>函数里。
    testString: assert(code.match(/\$\(document\)\.ready\(function.*(\s|\n)*.*button.*.addClass.*\);/g));

Challenge Seed

<script>
  $(document).ready(function() {

  });
</script>

<!-- 请修改本行以上的代码 -->

<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>

Solution

<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>

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