debounce.js

// Based on: http://unscriptable.com/2009/03/20/debouncing-javascript-methods/
function debounce(callback, wait, immediate) {
    var timeout;
    return function() {
        var self = this,
            args = arguments;
        if (timeout) {
            clearTimeout(timeout);
        } else if (immediate) {
            callback.apply(self, args);
        }
        timeout = setTimeout(function() {
            timeout = null;
            if (!immediate) {
                callback.apply(self, args);
            }
        }, wait);
    };
}

// Example
// If element is double clicked function will only be executed once
var element = document.getElementById("#some-element");
element.addEventListener("click", debounce(function(e) {
    console.log("Clicked!");
}, 1000, true));

// Minified
function debounce(e,t,n){var r;return function(){var i=this,s=arguments;if(r){clearTimeout(r)}else if(n){e.apply(i,s)}r=setTimeout(function(){r=null;if(!n){e.apply(i,s)}},t)}}