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分享function worker(name, age){
this.name = name;
this.age = age;
this.isWorking = false;
}
worker.prototype.startWork = function(){
if(this.isWorking) return; //这里是啥意思?
this.isWorking = true; //这里是啥意思?
};
//在此处尝试定义一个endWork方法
worker.prototype.endWork=function(){
};
var tom = new worker("tom", 40);
var jim = new worker("jim",20);
var html = "tom和jim两个实例的startWork方法是否共用内存 : " + (tom.startWork == jim.startWork).toString();
document.write(html);