Node deletion
Parent node.empty(): Delete all child nodes in the matching element set
Deleted node. remove([expr]): Remove all matching elements from the DOM
<!DOCTYPE html>
<html>
<head>
<title>php.cn</title>
<meta charset="utf-8" />
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
<script>
function f1(){
//父元素删除内部全部子元素
$("#big").empty();
//具体节点删除
$("#small li:first,#gai").remove();
}
</script>
<style type="text/css">
div {width:300px; height:200px; background-color:pink;}
</style>
</head>
<body>
<ul id="big">
<li>A</li>
<li>B</li>
<li id="guan">C</li>
</ul>
<ul id="small">
<li>a</li>
<li>b</li>
<li id="gai">c</li>
</ul>
<input type="button" value="删除" onclick="f1()" />
</body>
</html>
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