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Internet Explorer and a few other browsers cache GET requests for faster browsing.  Good for normal pages. Bad for AJAX. So, for repeated AJAX requests, you will get a cached data instead of the actual response from the server-side.  (Firefox, the prince of browsers does not seem to have this problem).

Two Options come up for this problem.

1) Use POST method for AJAX requests or

2) Just append some dummy parameter which has a different value for different GET requests. Just gives the browser an impression that its a fresh request.

So, Instead of this

var url = ‘getProducts.jsp?productId=123′

use this:

var url = ‘getProducts.jsp?productId=123′  + “&dummy=” + new Date().getTime();

Tags: ajax, caching in IE