Run javascript function when user finishes typing instead of on key up?

Question

I want to trigger an ajax request when the user has finished typing in a text box. I don\'t want it to run the function on every time the user types a letter because that wo

Answer 1

var timer;
var timeout = 1000;

$('#in').keyup(function(){
    clearTimeout(timer);
    if ($('#in').val) {
        timer = setTimeout(function(){
            //do stuff here e.g ajax call etc....
             var v = $("#in").val();
             $("#out").html(v);
        }, timeout);
    }
});

full example here: http://jsfiddle.net/ZYXp4/8/