36 lines
669 B
JavaScript
36 lines
669 B
JavaScript
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class SimplePubSub {
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subscribe(event, listener) {
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}
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unsubscribe(event, listener) {
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}
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publish(event, data) {
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}
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}
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// 创建 PubSub 实例
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const pubSub = new SimplePubSub();
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// 定义订阅者
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const subscriber1 = (data) => {
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console.log(`Subscriber 1 received: ${data}`);
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};
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const subscriber2 = (data) => {
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console.log(`Subscriber 2 received: ${data}`);
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};
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// 订阅事件
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pubSub.subscribe('event1', subscriber1);
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pubSub.subscribe('event1', subscriber2);
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// 发布事件
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pubSub.publish('event1', 'Hello, World!');
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// 取消订阅
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pubSub.unsubscribe('event1', subscriber1);
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// 发布事件
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pubSub.publish('event1', 'Hello again!');
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