Function.prototype.bind polyfill

bind polyfill

(function () {
  function _bind(context) {
    var fn = this;
    var _this = context;
    var bindArgs = Array.prototype.slice.call(arguments, 1);
    return function () {
      var args = Array.prototype.slice.call(arguments);
      args = bindArgs.concat(args);
      return fn.apply(_this, args);
    }
  }
  
  Function.prototype.bind = Function.prototype.bind ? Function.prototype.bind : _bind;
})()