Question

I am trying to identify if the window loses focus after 3 seconds of submit.

Currently I have this:

$("input").on("submit",function(){
$(window).blur(function(){
  console.log(a);
})
});

But this, no matter when you press submit, if you click outside the window or minimize the window the console.log triggers a.

This is what I am trying to achieve:

1. User submits form
2. In a period of 3 seconds, if the window loses focus do console.log(a);
3. After 3 seconds, if the window loses focus do nothing.
4. If the user submits again on the same session, repeat from step 1.

Answer 1

Try this:

$("#form").on("submit",function(){
    var blurFunc = function() {
        console.log(a);
    }

    $(window).blur(blurFunc);
    setTimeout(function() { $(window).unbind('blur', blurFunc); }, 3000);
});

The setTimeout call will unbind from the blur event after 3 seconds, causing the event to not fire.

For more info on setTimeout see here: http://www.elated.com/articles/javascript-timers-with-settimeout-and-setinterval/

Alternatively, you could do something like this:

$("#form").on("submit",function(){
    var submitted = true;

    var blurFunc = function() {
        if(submitted) {
            console.log(a);
        } 
    }

    $(window).blur(blurFunc);
    setTimeout(function() { submitted = false; }, 3000);
});