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| class EventBus {
| constructor() {
| this._eventContainer = {};
| }
| // 添加监听事件
| on(type, fn) {
| this._eventContainer[type] = this._eventContainer[type] || [];
| this._eventContainer[type].push(fn);
| return this;
| }
|
| // 删除监听事件
| off(type, fn) {
| if(this._eventContainer[type]) {
| let index = this._eventContainer[type].indexOf(fn);
| index >=0 && this._eventContainer[type].splice(index, 1);
| }
| return this;
| }
|
| // 触发监听事件
| trigger(type, ...args) {
| if (type && this._eventContainer[type]) {
| [...this._eventContainer[type]].forEach((fn)=> {
| fn.apply(null, args);
| })
| }
| return this;
| }
|
| // reset
| reset() {
| this._eventContainer = {};
| }
| }
|
| const eventBus = new EventBus();
|
| export default eventBus;
|
|
