Cross-site AJAX using jQuery
I have an existing jQuery plugin which makes a lot of AJAX calls (mostly JSON). I am wondering what is the quickest to allow it to do cross-site calls i.e. the $.get and $.p
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If you have control over the remote domain or the remote domain has a permissive crossdomain.xml you can drop in a library like flXHR in conjunction with its jQuery plugin.
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You can also use CORS instead of JSONP, works with ff,chrome,safari. CORS is less troublesome to setup and requires only a filter in server-side.
Please go through this article.Well explained and similar. Only constraint is IE does not support this and older versions of FF,chrome also has some issues.
http://techblog.constantcontact.com/software-development/using-cors-for-cross-domain-ajax-requests/
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JSONP will allow you to do cross-site calls. See jQuery docs on that matter.
The concept is simple: instead of doing a normal Ajax call, jQuery will append a
<script>tag to your<head>. In order for this to work, your JSON data needs to be wrapped in a function call.Your server needs to send information in such way (PHP example):
$json = json_encode($data); echo $_GET['jsonp_callback'] . '(' . $json . ');';Then, you can use jQuery to fetch that information:
$.ajax({ dataType: 'jsonp', jsonp: 'jsonp_callback', url: 'http://myotherserver.com/getdata', success: function () { // do stuff }, });More information is available here: What is JSONP?
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