Question

I am using jQuery 1.4. I want create the timer which starts on keyup event and resets on key press event. I want to use $.ajax request to send the time interval to the server. All I could find was countdown timers.

I appreciate any help.

Answer 1

You can do this very simply by comparing timestamps using native Javascript functions — no jQuery necessary for the timing logic:

var start, end, interval;

$('form' /*or whatever selector*/).keydown(function() {
    start = new Date();
}).keyup(function() {
    end = new Date();

    interval = end.getTime() - start.getTime(); // interval in milliseconds

    // do your AJAX here
});