JavaScript Throttle using requestAnimationFrame

throttle.js

function throttle(type, name, obj) {
  var running = false;
  
  obj = obj || window;

  var func = function() {
    if (running) return;

    running = true;

    requestAnimationFrame(function() {
      obj.dispatchEvent(new CustomEvent(name));
      running = false;
    });
  };

   obj.addEventListener(type, func);
}

// Usage...

// Throttle scroll event
throttle('scroll', 'scroll.throttled');

// Listen to it
window.addEventListener('scroll.throttled', function() {
  console.log('Event fired');
});