📄 动态html dom.html
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<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=GB2312">
<title>JavaScript Book--代码6-22</title>
<script language="JavaScript">
function addContent(){
var htmlDoms = new Array(
"<p>段落</p>",
"<a href='#'>超链接</a>",
"<select><option>下拉框</option></select>",
"<input type='text' value='文本框'>"
);
var length = htmlDoms.length-1;
var selected = Math.round((Math.random() * length));
var htmlDom = htmlDoms[selected];
document.getElementById("contents").innerHTML=htmlDom;
}
</script>
<style>div {text-align:center;} #contents
</style>
</head>
<body>
<div>
<input type="button" value="随机变化HTML组件" onclick="addContent()">
</div>
<p>
<hr>
</p>
<div id="contents">
</div>
</body>
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