function A(){this.name = "hellow"}
function B(){}
B.prototype = new A();
B.prototype.constructor = A //true
//这里强调的是 继承了之后 要记得设置回去
B.prototype.constructor = B;
//这里继承成功之后
b.constructor = B.prototype.constructor //true
时间: 2024-08-02 07:03:15
function A(){this.name = "hellow"}
function B(){}
B.prototype = new A();
B.prototype.constructor = A //true
//这里强调的是 继承了之后 要记得设置回去
B.prototype.constructor = B;
//这里继承成功之后
b.constructor = B.prototype.constructor //true