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management.onUninstalled()
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files/zh-cn/mozilla/add-ons/webextensions/api/management/onuninstalled/index.md
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title: management.onUninstalled() | ||
slug: Mozilla/Add-ons/WebExtensions/API/management/onUninstalled | ||
l10n: | ||
sourceCommit: b8a0743ca8b1e1b1b1a95cc93a4413c020f11262 | ||
--- | ||
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{{AddonSidebar}} | ||
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在附加组件被卸载时触发。 | ||
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此 API 需要“management”[API 权限](/zh-CN/docs/Mozilla/Add-ons/WebExtensions/manifest.json/permissions)。 | ||
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## 语法 | ||
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```js-nolint | ||
browser.management.onUninstalled.addListener(listener) | ||
browser.management.onUninstalled.removeListener(listener) | ||
browser.management.onUninstalled.hasListener(listener) | ||
``` | ||
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事件有三个函数: | ||
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- `addListener(listener)` | ||
- : 为此事件添加监听器。 | ||
- `removeListener(listener)` | ||
- : 停止监听此事件。`listener` 参数是要移除的监听器。 | ||
- `hasListener(listener)` | ||
- : 检查是否已为此事件注册了 `listener`。如果正在监听,则返回 `true`,否则返回 `false`。 | ||
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## addListener 语法 | ||
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### 参数 | ||
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- `listener` | ||
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- : 在此事件发生时调用的函数。此函数接收以下参数: | ||
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- `info` | ||
- : [`ExtensionInfo`](/zh-CN/docs/Mozilla/Add-ons/WebExtensions/API/management/ExtensionInfo),关于已卸载的附加组件的信息。 | ||
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## 浏览器兼容性 | ||
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{{Compat}} | ||
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## 示例 | ||
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打印被卸载的附加组件的名称: | ||
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```js | ||
browser.management.onUninstalled.addListener((info) => { | ||
console.log(`${info.name} 被卸载`); | ||
}); | ||
``` | ||
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{{WebExtExamples}} | ||
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> [!NOTE] | ||
> 该 API 基于 Chromium 的 [`chrome.management`](https://developer.chrome.google.cn/docs/extensions/reference/api/management#event-onUninstalled) API。本文衍生自 Chromium 代码中的 [`management.json`](https://chromium.googlesource.com/chromium/src/+/master/extensions/common/api/management.json)。 | ||
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