function P(name,sex){
this.name = name
this.sex = sex
}
P.prototype.say = function(){
console.log('我的名字是'+ this.name)
}
function F(){}
F.prototype = P.prototype
function C(){
P.apply(this,arguments)
}
C.prototype = new F()
C.uber = P.prototype
C.prototype.constructor = C
var c1 = new C('xiix','man')
c1.say()
console.log(c1.name)
console.log(c1.sex)