function GetCrossDomainContent() {
$.getScript("http://two.xthost.info/im0417/cnblogs.txt", function() { if (typeof (msg) != "undefined") { $("#TestCrossDomain").val(msg[0]); }
});

<p><input id="TestCrossDomain" type="button" value="點擊獲取跨域內容" /></p>
<script type="text/javascript">// <![CDATA[
$("#TestCrossDomain").click(function(){
GetCrossDomainContent();
});
function GetCrossDomainContent() {
$.getScript("http://two.xthost.info/im0417/cnblogs.txt", function() { if (typeof (msg) != "undefined") { $("#TestCrossDomain").val(msg[0]); } });
}
// ]]></script>