Simple JavaScript Debounce Function

debounce.js

// Returns a function, that, as long as it continues to be invoked, will not
// be triggered. The function will be called after it stops being called for
// N milliseconds. If `immediate` is passed, trigger the function on the
// leading edge, instead of the trailing.
function debounce(func, wait, immediate) {
	var timeout;
	return function() {
		var context = this, args = arguments;
		clearTimeout(timeout);
		if (immediate && !timeout) func.apply(context, args);
		timeout = setTimeout(function() {
			timeout = null;
			if (!immediate) func.apply(context, args);
		}, wait);		
	};
}


/* minified */
function debounce(n,t,u){var e;return function(){var i=this,o=arguments;clearTimeout(e),u&&!e&&n.apply(i,o),e=setTimeout(function(){e=null,u||n.apply(i,o)},t)}}
/* usage */

var myEfficientFn = debounce(function() {
	// All the taxing stuff you do
}, 250);

window.addEventListener('resize', myEfficientFn);