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freeCodeCamp/curriculum/challenges/chinese/03-front-end-libraries/jquery/remove-an-element-using-jquery.md
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Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

Co-authored-by: Crowdin Bot <support+bot@crowdin.com>
Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com>
Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>
2021-03-05 07:43:24 -08:00

2.8 KiB

id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
bad87fee1348bd9aed708826 使用 jQuery 删除元素 6 18262 remove-an-element-using-jquery

--description--

现在学习用 jQuery 从页面移除 HTML 标签。

jQuery 有一个 .remove() 方法,能完全移除 HTML 标签。

.remove() 方法从页面移除 target4 标签。

--hints--

应该用 jQuery 从页面中移除 target4标签。

assert(
  $('#target4').length === 0 && code.match(/\$\(["']#target4["']\).remove\(\)/g)
);

应该仅用 jQuery 移除该标签。

assert(
  code.match(/id="target4/g) &&
    !code.match(/<!--.*id="target4".*-->/g) &&
    $('#right-well').length > 0
);

--seed--

--seed-contents--

<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--

<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>