how to clear the cache data when using ajax?

Question

I am using Ajax to retrieve the data from server as below based on some ID to perform auto suggest function. however when i submit the form and update the database, the auto sug

Answer 1

Works with IE8

xmlHttp.open("GET", URL, true);
xmlHttp.setRequestHeader("Cache-Control", "no-cache");
xmlHttp.setRequestHeader("Pragma", "no-cache");
xmlHttp.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT");