Node.js EventTarget 对比 DOM EventTarge

Node.js EventTargetEventTarget Web API 之间有两个主要区别:

    There are two key differences between the Node.js EventTarget and the EventTarget Web API:

    1. Whereas DOM EventTarget instances may be hierarchical, there is no concept of hierarchy and event propagation in Node.js. That is, an event dispatched to an EventTarget does not propagate through a hierarchy of nested target objects that may each have their own set of handlers for the event.
    2. In the Node.js EventTarget, if an event listener is an async function or returns a Promise, and the returned Promise rejects, the rejection is automatically captured and handled the same way as a listener that throws synchronously (see EventTarget error handling for details).