Simple javascript debounce function used when bundling up function calls.

debounce.js

/**
 * Simple debounce function; usage:
 * 
 * Create a function that only can be called once every 500 ms
 * 
 *      var df = debounce(function() {
 *          ... func body ...
 *      }, 500)
 * 
 * Bind the function to an event
 * 
 *      document.addEventListener('keydown', df);
 * 
 * @param fn   {function} function you want to debounce
 * @param wait {number}   interval wait in ms
 */
function debounce(fn, wait) {
	var timeout;
	return function() {
		var ctx = this, args = arguments;
		clearTimeout(timeout);
		timeout = setTimeout(function() {
		    fn.apply(ctx, args);
		}, wait || 100);
	};
};