沒有任何輸出怎么回事？
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>無標(biāo)題文檔</title>
</head>
<body>
<div>
? javascript ?
? <p>javascript</p>
? <div>jQuery</div>
? <h5>PHP</h5>
</div>
<script type="text/javascript">
?var a=document.getElementsByName("div")[0].childNodes;
?for(var i=0;i<a.length;i++)
?{
???? document.write(a[i].nodeType);
???? }
?
</script>
</body>
</html>
2017-06-20
document.getElementsByName ?改成document.getElementsByTagName