职责链模式（javascript版）12

//职责链模式是链式操作是再链子上完成的操作
/*class action
{
	constructor(name)
	{
		this.name=name;
		this.nextAction=null;
	}
	setNextAction(action)
	{
		this.nextAction=action;
	}
	handle()
	{
		console.log(`${this.name}审批`);
		//如果下一位不是不是null就连续调用handle函数啦
		if(this.nextAction!=null)
		{
			this.nextAction.handle();
		}
	}
}
let a1=new action("组长");
let a2=new action("经理");
let a3=new action("总监");
//然后是组长把文件交给下一位审批(经理)
a1.setNextAction(a2);
a2.setNextAction(a3);
//这上面是要交流谁谁谁审批的啊
a1.handle();