debounce javascript function

debounce.js

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

//usage:
// var debouncedFunc = debounce(myFunc,300,true);