// time:2016.2.1// des:继承function Enemy() {     this.level = 50;      console.log("Enemy constructor"); }Enemy.prototype.attack_play = function(){    console.log("attack_play");};Enemy.prototype.wudiai = 100;Enemy.wudiai = "1213";Enemy.gongji = function(){    console.log("gongji   asasasd "+ Enemy.wudiai);}function BossEnemy(){    Enemy.call(this);    console.log("Boss constructor");}// 写法1// BossEnemy.prototype = {constructor: BossEnemy,};// for(var i in Enemy.prototype){//     BossEnemy.prototype[i] = Enemy.prototype[i];// }// 写法2var a = function (){};a.prototype = Enemy.prototype;BossEnemy.prototype = new a();BossEnemy.prototype.boss_attack = function(){    console.log("boss_attack");};BossEnemy.staticFunc = function(){    console.log("staticFunc called!");};var bos = new BossEnemy();bos.boss_attack();bos.attack_play();BossEnemy.staticFunc();console.log("==========================");BossEnemy.prototype.attack_play = function(){    Enemy.prototype.attack_play.call(this);    console.log("BossEnemy attack play!");}bos.attack_play();console.log("*****************************");// 写法三 js6class BingEnemy extends Enemy{    constructor(){        super();        this.flag = true;        this.name = "通天教主";        this.level = 100;            }        static staticFunc(){        console.log("static func called!");    }    get BingName(){        return this.name;    }    set BingName(value){        this.name = value;    }};BingEnemy.haha ="123";let bing = new BingEnemy();console.log(bing);BingEnemy.staticFunc();bing.attack_play();console.log(bing.BingName);bing.BingName = "jade";console.log(bing.BingName);//console.log(BingEnemy.wudi);console.log("============================");