Jquery 方式获取 iframe Dom元素
测试页面代码：
<html>
<head>
<title>jquery方式，访问iframe页面dom元素</title>
<meta name="Author" content="孙勤波">
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<script type="text/javascript" src="http://s1.bdstatic.com/r/www/cache/static/jquery/jquery-1.10.2.min_f2fb5194.js"></script>
<script type="text/javascript">
function getIframeDom(){
// 获取iframe的test元素
var test = $("#frame_1").contents().find("#test");
alert(test.html())
}
</script>
</head>
<body>
<iframe src="file:///C:/Users/SUN/AppData/Local/Temp/non9C34.htm" id="frame_1"></iframe>
<br />
<a href="javascript:getIframeDom();">测试</a>
</body>
</html>
<html> <head> <title>iframe页面a.html</title> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> </head> <body> <div id="test">我是测试页面test</div> </body> </html>
点击测试按钮效果：