design patterns

date: 2026-06-20 category: technology tags: [] excerpt: ‘浠庡疄闄呮渚嬬悊瑙ｅ父瑙佽璁℃ā寮忕殑閫傜敤鍦烘櫙’

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甯哥敤妯″紡

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class EventEmitter {
  private listeners: Map<string, Function[]> = new Map();

  on(event: string, callback: Function) {
    this.listeners.get(event)?.push(callback);
  }

  emit(event: string, data?: any) {
    this.listeners.get(event)?.forEach(cb => cb(data));
  }
}

宸ュ巶妯″紡

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鍗曚緥妯″紡

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蹇冨緱

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