Ajax cache problem in IE

By default IE will cache all Ajax requests. If you make a same Ajax request again without clearing cache, every time you will get same data, instead of fresh data.

So, what's the solution?

Solution: Use either the date and time or a random number in the query string to force IE to reload the relevant document.

Example:
var QueryString = "request_id=x";
var DatetimeQueryString = “&datetime=”+new Date().getTime();
var url = “request_url.php?”+QueryString+DatetimeQueryString;
httpRequest.open(”GET”, url, true);
httpRequest.onreadystatechange = update;
httpRequest.send(null);