Basic Javascript loading message while js processing completes

Question

Im sure this has been asked 1000 times before, basically all I want to do is change the content of an element of the page to display a loading message while my other javascr

Answer 1

Your pausecomp(3000) is essentially blocking the browser from redrawing because of the while loop. I would do something like this instead :

function wasteTime(){
    setTimeout(runNext, 3000);
}

function runNext(){
     alert("marvelous!");
}