dom_21 nodeType nodeName nodeVal
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div id="box" value="111">你好</div>
<script>
var ele = document.getElementById("box");//元素节点
var att = ele.getAttributeNode("id");//属性节点
var txt = ele.firstChild;
// console.log(ele);
// console.log(att);
// console.log(txt);
//nodeType
console.log(ele.nodeType);//1
console.log(att.nodeType);//2
console.log(txt.nodeType);//3
//nodeName
console.log(ele.nodeName);//DIV
console.log(att.nodeName);//id
console.log(txt.nodeName);//#text
//nodeValue
console.log(ele.nodeValue);//null
console.log(att.nodeValue);//box
console.log(txt.nodeValue);//你好
</script>
</body>
</html>
nodeType
本文标题：dom_21 nodeType nodeName nodeVal
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