基于jquery的事件订阅/分发demo

事件分发器，解决UI组件之间通信问题

• 事件监听

  on: function (event, callback, context) {    if (!event || !callback) {        return;          }    if (!this.listener[event]) {        this.listener[event] = $.Callback();    }    if (!this.listener[event].has(callback)) {        this.listener[event].add(callback);    }    return this;}

• 发布事件

  fire: function (event, options) {    var defer = $.Deferred();    try {        this.listener[event].fire(options);        defer.resolve();    }    catch (e) {        defer.reject();    }    return defer;}

• 删除事件

  remove: function (event, callback) {    var ev = this.listener[event];    if (!callback) {        ev.empty();        return;    }    ev.remove(callback);    return this;}