Files
freeCodeCamp/curriculum/challenges/chinese/03-front-end-libraries/jquery/change-the-css-of-an-element-using-jquery.md
Oliver Eyton-Williams ee1e8abd87 feat(curriculum): restore seed + solution to Chinese (#40683)
* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
2021-01-12 19:31:00 -07:00

3.2 KiB
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id, title, challengeType, forumTopicId, required, dashedName
id title challengeType forumTopicId required dashedName
bad87fee1348bd9aed908826 使用 jQuery 更改元素的 CSS 6 16776
link
https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.2.0/animate.css
change-the-css-of-an-element-using-jquery

--description--

我们也能用 jQuery 直接改变 HTML 标签的 CSS。

jQuery 有一个.css()方法,其能改变标签的 CSS。

下面的代码效果是把颜色变蓝:

$("#target1").css("color", "blue");

这与通常的 CSS 声明略有不同,因为这个 CSS 属性和它的值在英文引号里,并且它们用逗号而不是冒号间隔开。

删除你的jQuery选择器并留下空的document ready function

请选择target1并将其颜色变为红色red

--hints--

target1标签应该有红色文本。

assert($('#target1').css('color') === 'rgb(255, 0, 0)');

仅用 jQuery 给标签添加类。

assert(!code.match(/class.*animated/g));

--seed--

--seed-contents--

<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--

<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>