A load balancing function.... debounce()

debounce.js

/*
  The debounce method returns a function which wraps your callback,
  limiting its execution rate to the limit specified in the second argument.
  Now your frequent callbacks can't brick the user's browser!
*/

function debounce(func, wait, immediate) {
    var timeout;
    return function() {
        var context = this, args = arguments;
        var later = function() {
            timeout = null;
            if (!immediate) func.apply(context, args);
        };
        var callNow = immediate && !timeout;
        clearTimeout(timeout);
        timeout = setTimeout(later, wait);
        if (callNow) func.apply(context, args);
    };
  }

// execute once every 300 ms
window.addEventListener('resize', debounce(function(event) {

    //  (whatever you'd like to do!)

}, 300));