• one

Function .prototype.bindSelf= function(context){var that = this;return function(){that.apply(context)} } 復制代碼

• Two

Function . prototype . bind2 = function(context){var that = this;//獲取參數var args = Array.prototype.slice.call(arguments,1);return function(){var bindArgs = Array.prototype.slice.call(arguments)that .apply(context,args.concat(bindArgs))} } 復制代碼

• Three

Function.prototype.bind = function(context){var that = this;var args = Array.prototype.slice.call(arguments,1);var Fun = function(){}var Func = function(){var bindArgs = Array.prototype.slice.call(arguments);that.apply(this instanceof that ? this : context,bindArgs)}Fun.prototype = this.prototype;Func.prototype = new Fun();return Func; } 復制代碼

轉載于:https://juejin.im/post/5aa4d7c66fb9a028dd4dd9a9

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