//采用对象冒充的方式实现js继承 function A(color) { this.Acolor = color; this.AshowColor = function() { document.writeln("Acolor: " + this.Acolor); } } function B(color, name) { //将newMethod赋值A，调用A的构造函数 this.newMethod = A; this.newMethod(color); //然后删除对A的引用,这样以后不能调用他 delete this.newMethod; this.Bname = name; this.BshowName = function() { document.writeln("Bname: " + this.Bname); } } var objA = new A("red"); objA.AshowColor(); document.writeln("----------------"); var objB = new B("black", "demo"); objB.AshowColor(); objB.BshowName(); document.writeln("----------------");