Question

I have been working on writing a library of code for my future projects. One of the functions I’ve been working on is a pause function. So far I have no problem with the errors reporting that the script is running to long even on pauses as long as 10 seconds. This is to primarily keep malicious users busy, it works well when you set a very long time. I was wondering if there are any errors that I should look out for that I might face?
Here’s the code…

pause = function(a) {
    var b = new Date().getTime();
    e = false;
    function wait() {
    d=10;
    for(i=0;i<d;i++) {
        d++;
        var c = new Date().getTime();
        if(c-b>=a) {
            e = true;
            break;
        }
        if(d>1000000) {
            break;
        }
    }
}
wait();
if(e==false) {
    pause(a-(new Date().getTime()-b));
}};

Answer 1

You never ever want to do this sort of thing in Javascript. As you have noticed, the browser will complain about your script taking too long. Furthermore, this will take much more energy than necessary which is important for mobile devices with limited battery capacity.

Instead, use the standard setTimeout() function to run code at a later time.