<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>用js实现代码的复制功能</title>
<script language="javascript">
function copycode(obj) {
var rng = document.body.createTextRange();
rng.moveToElementText(obj);
rng.scrollIntoView();
rng.select();
rng.execCommand("Copy");
rng.collapse(false);
}
function findobj(n, d) {
var p, i, x;
if(!d) d = document;
if((p = n.indexOf("?"))>0 && parent.frames.length) {
d = parent.frames[n.substring(p + 1)].document;
n = n.substring(0, p);
}
if(x != d[n] && d.all) x = d.all[n];
for(i = 0; !x && i < d.forms.length; i++) x = d.forms[i][n];
for(i = 0; !x && d.layers && i < d.layers.length; i++) x = findobj(n, d.layers[i].document);
if(!x && document.getElementById) x = document.getElementById(n);
return x;
}
</script>
</head>
<body>
<a href="javascript:;" onclick="copycode(findobj('code'));">复制代码</a></p>
<p>
<pre id="code">
<!--[if IE 5]>
<h1> <h1>这些文字只有在IE5 或 IE5.5 才可以看得见. </h1></h1>
<![endif]-->
</pre>
</p>
</body>
</html>
