js引用类型指针

var objOld = {name:"hhh"};

var objNew = objOld;

console.log(objNew); //{name: "hhh"}

console.log(objOld);// {name: "hhh"}

objNew 和objOld指针是一个，改变其中一个，另一个也会改变；

objNew.age="24"

console.log(objNew); //{name: "hhh", age: "24"}

console.log(objOld);//{name: "hhh", age: "24"}