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zh-CN: create events.Event #22983

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---
title: events.Event
slug: Mozilla/Add-ons/WebExtensions/API/events/Event
l10n:
sourceCommit: a16fecbf75f71fc11e03ef6cd0b0c34ad6f3d480
---

{{AddonSidebar}}

允许对浏览器事件添加和移除监听器的对象。

## 类型

本类型的取值是对象。

## 方法

- {{WebExtAPIRef("events.Event.addListener","events.Event.addListener()")}}
- : 为事件注册一个事件监听器。
- {{WebExtAPIRef("events.Event.removeListener","events.Event.removeListener()")}}
- : 从事件中注销一个事件监听器。
- {{WebExtAPIRef("events.Event.hasListener","events.Event.hasListener()")}}
- : 测试监听器的注册状态。
- {{WebExtAPIRef("events.Event.hasListeners","events.Event.hasListeners()")}}
- : 测试事件是否由任何注册了的监听器。
- {{WebExtAPIRef("events.Event.addRules","events.Event.addRules()")}}
- : 注册处理事件的规则。
- {{WebExtAPIRef("events.Event.getRules","events.Event.getRules()")}}
- : 返回当前注册的规则。
- {{WebExtAPIRef("events.Event.removeRules","events.Event.removeRules()")}}
- : 注销当前注册的规则。

## 浏览器兼容性

{{Compat}}

{{WebExtExamples}}

> [!NOTE]
> 该 API 基于 Chromium 的 [`chrome.events`](https://developer.chrome.com/docs/extensions/reference/events/#type-Event) API。本文衍生自 Chromium 代码中的 [`events.json`](https://chromium.googlesource.com/chromium/src/+/master/extensions/common/api/events.json)。

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