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jquery delete and clear elements

无忌哥哥Original: 2018-06-29 14:43:361572browse

jquery delete and empty elements

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>删除与清空元素</title>
<style type="text/css">
li {width: 300px;}
.hot {background-color: lightgreen;}
.top {background-color: yellow;}
</style>
</head>
<body>
<ul>
<li><a href="">php中文网2018年最新教学视频01</a></li>
<li><a href="">php中文网2018年最新教学视频02</a></li>
<li><a href="">php中文网2018年最新教学视频03</a></li>
<li><a href="">php中文网2018年最新教学视频04</a></li>
<li><a href="">php中文网2018年最新教学视频05</a></li>
<li><a href="">php中文网2018年最新教学视频06</a></li>
<li><a href="">php中文网2018年最新教学视频07</a></li>
<li><a href="">php中文网2018年最新教学视频08</a></li>
<li><a href="">php中文网2018年最新教学视频09</a></li>
<li><a href="">php中文网2018年最新教学视频10</a></li>
</ul>
<button>remove()删除绿色背景元素</button>
<button>empty()清空黄色背景元素的内容</button>
</body>
</html>

* 1. remove(): delete element

* Parameters: selector

$(&#39;button&#39;).eq(0).on(&#39;click&#39;,function(){
//实例: 删除列表中类样式为hot的元素,条件由filter()给出
$(&#39;li&#39;).filter(&#39;.hot&#39;).remove()
//也可以将删除条件写到remove()方法参数中,这样可简化语句
$(&#39;li&#39;).remove(&#39;.hot&#39;)
})

* 2. empty()

* Parameters: None

* Function: Clear the content of the element, most used when calling Ajax

$(&#39;button:first&#39;).next().click(function () {
$(&#39;li&#39;).filter(&#39;.top&#39;).empty()
})

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