freeCodeCamp/curriculum/challenges/chinese/03-front-end-libraries/jquery/clone-an-element-using-jquery.md

---
id: bad87fee1348bd9aed508826
challengeType: 6
forumTopicId: 16780
title: 使用 jQuery 克隆元素
---

## Description
<section id='description'>
除了移动标签，也可以把元素从一个地方复制到另一地方。
jQuery 有一个<code>clone()</code>方法，可以复制标签。
例如，如果想把<code>target2</code>从<code>left-well</code>复制到<code>right-well</code>，可以设置如下：
<code>$("#target2").clone().appendTo("#right-well");</code>
你是否注意到这两个 jQuery 方法连在一起了吗？这被称为<code>链式调用（function chaining）</code>，是一种用 jQuery 实现效果的简便方法。
克隆<code>target5</code>标签并附加到<code>left-well</code>。
</section>

## Instructions
<section id='instructions'>

</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>target5</code>标签应该在<code>right-well</code>内。
    testString: assert($("#right-well").children("#target5").length > 0);
  - text: 克隆<code>target5</code>标签并放在<code>left-well</code>内。
    testString: assert($("#left-well").children("#target5").length > 0);
  - text: 仅用 jQuery 移动这些标签。
    testString: assert(!code.match(/class.*animated/g));

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='html-seed'>

```html
<script>
  $(document).ready(function() {
    $("#target1").css("color", "red");
    $("#target1").prop("disabled", true);
    $("#target4").remove();
    $("#target2").appendTo("#right-well");

  });
</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>
```

</div>



</section>

## Solution
<section id='solution'>

```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>
```

</section>