Javascript - IE8替代bind（） [英] Javascript - IE8 alternative to bind()

问题描述

img.attachEvent("onclick", function(img){

 alert(img.id);

}.bind(null,img)); 

我如何在IE 8中完成这项工作？或者最直接的选择是什么？

How can i make this work in IE 8? Or what is the most direct alternative?

推荐答案

我找到了一个polyfill 这里。

I found a polyfill here.

Function.prototype.bind = Function.prototype.bind || function(b) {
    if (typeof this !== "function") {
      throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable");
    }

    var a = Array.prototype.slice;
    var f = a.call(arguments, 1);
    var e = this;
    var c = function() {};
    var d = function() {
      return e.apply(this instanceof c ? this : b || window, f.concat(a.call(arguments)));
    };

    c.prototype = this.prototype;
    d.prototype = new c();

    return d;
};

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