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Registered tutorials: 501
Registered Users: 37765
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Rating: 5 out of 1 votes cast
Category: Technique Introduction
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How to make XmlHttpRequest calls to another server in your domain
Abstract: shows how to organize cross-domain access to resources using server-side reverse proxying or bypassing XmlHttpRequest entirely.
The problem XmlHttpRequest objects are bound by the same origin security policy of browsers, which prevents a page from accessing data from another server. This has put a serious limitation on Ajax developers: you can use XmlHttpRequests to make background calls to a server, but it has to be the same server that served up the current page. Known workarounds for this limitation involve either server-side reverse proxying or bypassing XmlHttpRequest entirely. <html>
<head>
<script type=”text/javascript” xsrc=”xmlhttp.js”<>/script>
<script type=”text/javascript”>
var AJAX_URL=”http://www.fettig.net/playground/ajax-subdomain/ajaxdata.php”;
function getTime(){
geturl(AJAX_URL,%20gotTime);
}
function gotTime(status, headers, result) {
document.getElementById(’time’).innerHTML = result;
setTimeout(getTime, 1000)
}
window.onload = getTime;
</script>
</head>
<body>
<div id=”time”></div>
</body>
</html>
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