debounce method on blog "Introducing Javascript method debounce" on 2014/05/12

debounce.js

function debounce(func, wait, immediate) {
  var timeout;
  return function () {
    var obj = this, argus = arguments;
    function delayed () {
      if (!immediate) {
        func.apply(obj, argus);
      }
      timeout = null;
    }
    if (timeout) {
      clearTimeout(timeout);
    } else if (immediate) {
      func.apply(obj, argus);
    }
    timeout = setTimeout(delayed, wait);
  };
}