松鼠鱼似乎错过了"bind()",如何在没有它的情况下将JS回调绑定到"this"?



任何人都知道谁将JS回调绑定到" bind()"?

根据三星规格:

2013在V8上:工作正常(请参阅链接的镜头,太大而无法添加)

2012是在松鼠上:获得异常:" bind()"作为功能不可用(请参阅链接射击,太大而无法添加)

有问题的代码是:

		var extJsCallBacks = [
          function(){this._setupSystemInfo();}.bind(this), 
          function(){this._setupConfigInfo();}.bind(this),
          function(){this._setupRepository();}.bind(this), 
          function(){this._setupContents();}.bind(this)
          ];

有任何提示?

在mdn上找到的polyfill

if (!Function.prototype.bind) {
  Function.prototype.bind = function(oThis) {
    if (typeof this !== 'function') {
      // closest thing possible to the ECMAScript 5
      // internal IsCallable function
      throw new TypeError('Function.prototype.bind - what is trying to be bound is not callable');
    }
    var aArgs   = Array.prototype.slice.call(arguments, 1),
        fToBind = this,
        fNOP    = function() {},
        fBound  = function() {
          return fToBind.apply(this instanceof fNOP
                 ? this
                 : oThis,
                 aArgs.concat(Array.prototype.slice.call(arguments)));
        };
    if (this.prototype) {
      // Function.prototype doesn't have a prototype property
      fNOP.prototype = this.prototype; 
    }
    fBound.prototype = new fNOP();
    return fBound;
  };
}

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