Prevent IE from caching your ajax urls

ajax-no-cache

function randomString(len){
    var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
    var string_length = len;
    var randomstring = '';
    for (var i=0; i<string_length; i++) {
        var rnum = Math.floor(Math.random() * chars.length);
        randomstring += chars.substring(rnum,rnum+1);
    }
    return randomstring;
}

//this is will hijack all the ajax request made through jquery
//and dynamically add our random string using the function above
$(function(){
    $(document).ajaxSend(function(e, jqxhr, settings) {
        settings.url += (settings.url.match(/\?reqid/) ? "" : ("/?reqid="+ randomString(8)));
    });
});