关于iframe ajax 跨越的简单列子_iframe跨越-优快云博客

view-source:http://www.css88.com/demo/iframe-domain/

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>使用document.domain和iframe实现站内AJAX跨域</title>
<script type="text/javascript" src="http://www.css88.com/tool/css3Preview/jquery-1.4.2.min.js"></script>

</script>
</head>
<body>
	<div id="test"></div>
    <!--<iframe src="http://css88.com/demo/domain/iframe.html" id="iframe" style="display:none;"></iframe>-->
<script type="text/javascript">
//document.write(document.domain)
document.domain = "css88.com";

var createAjaxIframe={
	appIframe: function(iframeId, iframeSrc){
		var iframe = document.createElement("iframe");
		iframe.src = iframeSrc// "http://css88.com/demo/domain/iframe.html";
		iframe.id = iframeId;
		iframe.style.display = "none";
		if (iframe.attachEvent) {
			iframe.attachEvent("onload", function(){
				createAjaxIframe.domainAjax(iframeId);
			});
		}else {
			iframe.onload = function(){
				createAjaxIframe.domainAjax(iframeId);
			};
		}
		document.body.appendChild(iframe);
	},
	domainAjax: function(iframeId){
		var iframeDom = document.getElementById(iframeId).contentWindow.$;
		iframeDom.getJSON("http://css88.com/demo/iframe-domain/city.html", function(date){
			var cityOption = "";
			for (i = 0; i < date.length; i++) {
				cityOption += date[i].c_name + "--" + date[i].c_value + "<br />"
			}
			$("#test").html(cityOption);
		});
	}
	
};
createAjaxIframe.appIframe("iframe","http://css88.com/demo/iframe-domain/iframe.html");
</script>

<!--统计-->
<script type="text/javascript"> 
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script> 
<script type="text/javascript"> 
try {
var pageTracker = _gat._getTracker("UA-3448069-1");
pageTracker._trackPageview();
} catch(err) {}</script> 
</body>
</html>

view-source:http://css88.com/demo/iframe-domain/iframe.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery选择城市</title>
<script type="text/javascript" src="http://www.css88.com/tool/css3Preview/jquery-1.4.2.min.js"></script>

</script>
</head>
<body>

<script type="text/javascript">
document.domain = "css88.com";
</script>
</body>
</html>

view-source:http://css88.com/demo/iframe-domain/city.html

[{"c_name":"杭州","c_value":"1"},{"c_name":"舟山","c_value":"2"}]

这里用了jquery进行post提交，当然可以该写成模拟form提交的方式。