麻烦看一下为什么我的代码没办法运行，没看出什么问题
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>
<div id="content">
<h1>html</h1>
<h1>php</h1>
<h1>javascript</h1>
<h1>jquery</h1>
<h1>java</h1>
</div>
<script type="text/javascript">
function clearText() {
var content=document.getElementById("content");
var conCN=content.childNodes;
while((conCN.length>0)&&(conCN[0].nodeType!=1)){
content.removeChild(conCN[0]);
}
var newDiv=document.createElement("div");
if(conCN.length>0){
var rmNode=content.removeChild(conCn[0]);
newDiv.innerHTML="clear\""+rmNode.innerHTML+"\"done!";
}
else{
newDiv.innerHTML="There is no node";
}
content.parentNode.appendChild(newDiv);
}
</script>
<button onclick="clearText()">清除节点内容</button>
</body>
</html>
