SOURCE

//订阅者模式

//订阅队列
var lovers = []

let b ={
    name:'mary',
}

b.__proto__.yell = function(){
    console.log('my name is '+b.name)
}

b.__proto__.namechange = function(subs){
    console.log(subs,'my name has changed to '+b.name)
}

//增加新订阅者
b.__proto__.addlover = function(lover){
   lovers.push(lover)
}

//广播
b.__proto__.notify = function(subscribers){
   subscribers.forEach(function(item,index){
       b.namechange(item.name)
   })
}

//更新通知订阅者
b.__proto__.changename = function(name){
    b.name = name
    b.notify(lovers)
}




let roc ={
    name:'roc'
}

let sam ={
    name:'sam'
}

b.addlover(roc)
b.addlover(sam)
b.changename('susan')