JavaScript cloneNode(): clone node

Syntax:
nodeObject.cloneNode(boolean)
Parameter description:

QQ截图20161013113010.png

For example, clone the node with id="demo":

<div id="demo">
    <div>点击这里进行克隆</div>
    <div>节点</div>
    <div>节点</div>
</div>
<script type="text/javascript">
document.getElementById("demo").onclick=function(){
    alert(this.cloneNode(true).children.length);
}
</script>

Next Section

new file

<!DOCTYPE HTML>
<html>
<head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <title>无标题文档</title>
 <div id="demo">
 <div>点击这里进行克隆</div>
 <div>节点</div>
 <div>节点</div>
 </div>
 <script type="text/javascript">
 document.getElementById("demo").onclick=function(){
 alert(this.cloneNode(true).children.length);
 }
 </script>
</head>
<body>

</body>
</html>

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