How to prevent caching from jQuery Ajax?

Question

Hi,

Could anyone please help me with this? I have a web page using .manifest for offline storage caching. In that page, I use jQuery ajax call to get the data from the server. If I first load the page, it is OK. I can switch between Online and Offline. But the problem is when I go back online and refresh the page. jQuery ajax cannot be able to talk to server anymore. Is there a way to for ajax to talk to the server or clear offline cache?

My ajax call is as such:

        $.ajax({

            type: "GET",

            url: requestUrl,
            success: localSuccess,

            error: error,

            dataType: "text",
            cache:false
        });

Answer 1

I have this piece of code at the top of each page/Master page

    //Disable caching in IE, becuase it's EVIL!
    $(document).ready(function () {
        $.ajaxSetup({ cache: false });
    });

Answer 2

put the random string into url like "get.php?random="+Math.random()" can solve this problem. It is not the best solution but It works great.