Question

I have this javascript method that needs to run in the background

window.setInterval(function(){
 validateCaseStatus();
}, 3000);        

On the same page I have a button that asks the user if he wants to submit uploaded documents. But I noticed when the popUp msg(alert) is up the script on the page wont run.

Is there a way to keep the script running?

I use this method to check if the case status is changed and disable window.onbeforeunload.
My question is if theres a way I can keep the script above running even when a popUp alert is shown.

//cancels onbefore close popup when docs are submitted
function validateCaseStatus(){

     caseStatus = sforce.apex.execute("IFAP_WebService","CheckCaseStatus", {!$caseId});  

    if (caseStatus == "Uploaded" || caseStatus == "Submitted")
    {
         submitted = true; 
        window.onbeforeunload  = null;
        validateCaseStatus = null;
    }
}

Answer 1

Try using WebWorkers. It’s a new html5 concept, and requires a bit more work, but they are very easy to understand and very helpful. See https://developer.mozilla.org/en-US/docs/DOM/Using_web_workers?redirectlocale=en-US&redirectslug=Using_web_workers http://ejohn.org/blog/web-workers/ and http://www.html5rocks.com/en/tutorials/workers/basics/