110 lines
2.8 KiB
Markdown
110 lines
2.8 KiB
Markdown
---
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id: bad87fee1348bd9aed708826
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title: 使用 jQuery 删除元素
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challengeType: 6
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forumTopicId: 18262
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dashedName: remove-an-element-using-jquery
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---
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# --description--
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现在学习用 jQuery 从页面移除 HTML 标签。
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jQuery 有一个 `.remove()` 方法，能完全移除 HTML 标签。
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用 `.remove()` 方法从页面移除 `#target4` 元素。
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# --hints--
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应该用 jQuery 从页面中移除 `target4`标签。
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```js
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assert(
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$('#target4').length === 0 && code.match(/\$\(["']#target4["']\).remove\(\)/g)
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);
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```
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应该仅用 jQuery 移除该标签。
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```js
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assert(
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code.match(/id="target4/g) &&
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!code.match(/<!--.*id="target4".*-->/g) &&
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$('#right-well').length > 0
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);
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```
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# --seed--
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## --seed-contents--
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```html
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<script>
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$(document).ready(function() {
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$("#target1").css("color", "red");
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$("#target1").prop("disabled", true);
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});
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</script>
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<!-- Only change code above this line -->
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<div class="container-fluid">
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<h3 class="text-primary text-center">jQuery Playground</h3>
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<div class="row">
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<div class="col-xs-6">
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<h4>#left-well</h4>
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<div class="well" id="left-well">
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<button class="btn btn-default target" id="target1">#target1</button>
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<button class="btn btn-default target" id="target2">#target2</button>
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<button class="btn btn-default target" id="target3">#target3</button>
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</div>
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</div>
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<div class="col-xs-6">
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<h4>#right-well</h4>
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<div class="well" id="right-well">
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<button class="btn btn-default target" id="target4">#target4</button>
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<button class="btn btn-default target" id="target5">#target5</button>
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<button class="btn btn-default target" id="target6">#target6</button>
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</div>
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</div>
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</div>
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</div>
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```
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# --solutions--
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```html
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<script>
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$(document).ready(function() {
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$("#target1").css("color", "red");
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$("#target1").prop("disabled", true);
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$("#target4").remove();
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});
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</script>
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<!-- Only change code above this line -->
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<div class="container-fluid">
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<h3 class="text-primary text-center">jQuery Playground</h3>
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<div class="row">
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<div class="col-xs-6">
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<h4>#left-well</h4>
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<div class="well" id="left-well">
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<button class="btn btn-default target" id="target1">#target1</button>
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<button class="btn btn-default target" id="target2">#target2</button>
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<button class="btn btn-default target" id="target3">#target3</button>
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</div>
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</div>
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<div class="col-xs-6">
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<h4>#right-well</h4>
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<div class="well" id="right-well">
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<button class="btn btn-default target" id="target4">#target4</button>
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<button class="btn btn-default target" id="target5">#target5</button>
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<button class="btn btn-default target" id="target6">#target6</button>
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</div>
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</div>
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</div>
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</div>
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```
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