<!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="con"><p>javascript</p><div>jQuery</div><h5>PHP</h5>
</div>
<script type="text/javascript">
var x=document.getElementById("con");
document.write(x.firstChild.nodeName+"</br>");
document.write(x.lastChild.nodeName+"</br>");
</script>
</body>
</html>为什么下面是输出的P和#text，节点有点没懂
2017-05-16
<!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="con">
<p>javascript</p>
<div>jQuery</div>
<h5>PHP</h5>
</div>
<div id="con1"><p>javascript</p><div>jQuery</div><h5>PHP</h5></div>
<script type="text/javascript">
var x=document.getElementById("con");
document.write(x.firstChild.nodeName+"<br>");
document.write(x.lastChild.nodeName+"<br>");
var x=document.getElementById("con1");
document.write(x.firstChild.nodeName+"<br>");//显示节点名称
document.write(x.lastChild.nodeName+"<br>");
var x=document.getElementById("con1");
document.write(x.firstChild.innerHTML+"<br>");//显示节点内容
document.write(x.lastChild.innerHTML+"<br>");
</script>
</body>
</html>
举报
