關(guān)于使用getElementsTagName不能實(shí)現(xiàn)效果
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>無(wú)標(biāo)題文檔</title>
</head>
<body>
<ul id="test"><li>JavaScript</li><li>HTML</li></ul>?
?
<script type="text/javascript">
?var otest = document.getElementById("test"); ?
var xinli = document.createElement("li");
xinli.innerHTML="PHP";
var yuanli =document.getElementsTagName("li")[1];
otest.insertBefore(xinli,yuanli);
??
??
??
</script>?
</body>
</html>
2016-05-01
var yuanli =document.getElementsTagName("li")[1];
改成 document.getElementsByTagName("li")[1];
少加了一個(gè)By