javascript面向对象中继承实现

//javascript面向对象中继承实现
function Person(name){
this.name = name;
}

Person.prototype.showName = function(){
alert(this.name);
}

function Worker(name, job){
Person.apply(this,arguments)
this.job = job;
}
for(var i in Person.prototype){
Worker.prototype = Person.prototype;
}
new Worker('sl', 'coders').showName();