function Person(name,age) {
this.name=name;
this.age=age;
this.play=function () {
console.log("喜欢玩游戏");
};
}
var obj=new Person("卡卡西",20);
//obj.name="佐助";
obj["name"]="佐助";
console.log(obj["name"]);
obj.play();
obj["play"]();
原文：https://www.cnblogs.com/jane-panyiyun/p/11970601.html