DOM children方法
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>DOM children方法</title>
</head>
<body>
<div id="div1">
<p id="pid">p标签</p>
</div>
<script type="text/javascript">
var div1=document.getElementById("div1");
var first=div1.children[0];
console.log("first.nodeName="+first.nodeName);//first.nodeName=P
console.log("first.innerHTML="+first.innerHTML);//first.innerHTML=p标签
</script>
</body>
</html>
