26 lines
546 B
JavaScript
26 lines
546 B
JavaScript
// 简单的事件总线，用于组件间通信
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class EventBus {
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constructor() {
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this.events = {};
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}
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on(event, callback) {
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if (!this.events[event]) {
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this.events[event] = [];
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}
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this.events[event].push(callback);
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}
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off(event, callback) {
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if (!this.events[event]) return;
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this.events[event] = this.events[event].filter(cb => cb !== callback);
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}
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emit(event, data) {
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if (!this.events[event]) return;
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this.events[event].forEach(callback => callback(data));
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}
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}
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export default new EventBus();
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