Solution to AJAX Cache problem with IE

Few days ago, I was working on a project where in a webpage one field was getting populated through AJAX.

To my surprise, the response from the server that I was getting was not the one that I expected. Page doesn't display new data. Then i searched the problem on internet and came to know that Internet Explorer (IE) caches the AJAX request. So if I make ajax queries with same URL, it tends to give me same old output as IE caches the data that it gets from previous query.

To solve  this problem,  I appended a counter or random number with my url. it worked.

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.
var count =Math.random();
 if (httpObject != null)
{
 httpObject.open("GET", "getinfo.php?request=" + request + "&val=" + val + "&count=" + count++, true);
 httpObject.send(null);
.
.
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