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

I had this problem once before. This is probably something you can fix in your server settings. What the server does is get a server request, build the answer, and when the same request is done again it sends the same response it built before.

To easily avoid this problem, I added an extra request parameter (a UID). so:

xmlhttp.open("GET","gethint.php?q="+str+**"?something"=RANDOMGUID**,true);

this way you always ha a unique request.