摘要： var Point = function(x,y){ this.x = x; this.y = y; } Point.name = '我是name'; Point.prototype.sum = function(){ return this.x + this.y; } Point.prototype.odd = function(){ alert(this.sum()); } var a = new Point(1,2); a.odd();var b = new Point(3,4); b.odd(); Point.prototype ={ // 这个过程将会覆盖之前的方法( 阅读全文