摘要: Array.prototype.map = function(fun /*, thisp*/) {var len = this.length; if (typeof fun != "function") thrownewTypeError(); var res = newArray(len); va 阅读全文
posted @ 2017-08-02 15:06 王永峰的博客 阅读(488) 评论(0) 推荐(0) 编辑