[英]javascript mediator vs observer
First I want to say I have googled javascript mediator vs observer
and read almost ten links. 首先,我想说我已经谷歌搜索了
javascript mediator vs observer
并阅读了近十个链接。
Also I search in statckoverflow and I got this Mediator Vs Observer Object-Oriented Design Patterns and mediator-vs-observer . 我也在statckoverflow中搜索,我得到了这个Mediator Vs Observer面向对象的设计模式和mediator-vs-observer 。
However I still do not have clear understand about the difference between them. 但是我仍然没有清楚地了解它们之间的区别。
So I wonder if someone can explain them more clearly? 所以我想知道是否有人可以更清楚地解释它们?
Maybe a live example. 也许是一个实例。 :)
:)
Thanks. 谢谢。
I tried to create an example, is this a pattern of mediator? 我试图创建一个例子,这是一个中介模式吗?
code: 码:
var EventMediator = {
publish: function (target, message) {
var args = Array.prototype.slice.call(arguments, 2);
var msgs = target.messages || [];
for (var i = 0; i < msgs.length; i++) {
var msg = msgs[i];
msg.callback.apply(msg.context, args);
}
},
register: function (target, message, fn) {
target.messages = target.messages || [];
target.messages.push({
context: target,
callback: fn
});
}
};
var t1 = {name: 'kk'};
var t2 = {name: 'gg'};
EventMediator.register(t1, "nameChanged", function () {
console.info("t1 name chagned");
});
EventMediator.publish(t1, "nameChanged");
Here I want to know if the Mediator
should know about the exist of the object who trigger the message? 在这里,我想知道
Mediator
是否应该知道触发消息的对象的存在?
Observer pattern : the observed object manages its own list of observers (aka listeners) which must be notified when a certain event happens. 观察者模式 :观察对象管理自己的观察者列表 (也称为侦听器),当某个事件发生时必须通知它们。
Mediator pattern : the observed object is not aware of the list of its observers, there is an external entity that makes the mapping between observed objects and observers. 中介模式 :观察对象不知道其观察者的列表,有一个外部实体在观察对象和观察者之间进行映射。
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