nodeEventTarget.addListener(type, listener)

• type <string>
• listener <Function> | <EventListener>
• 返回：<EventTarget> this

Node.js 特定的 EventTarget 类扩展，它模拟了等效的 EventEmitter API。addListener() 和 addEventListener() 之间唯一的区别是 addListener() 会返回 EventTarget 的引用。

🌐 Node.js-specific extension to the EventTarget class that emulates the equivalent EventEmitter API. The only difference between addListener() and addEventListener() is that addListener() will return a reference to the EventTarget.