zh-CN: create sidebarAction.getTitle() (#24897)

Co-authored-by: A1lo <[email protected]>

files/zh-cn/mozilla/add-ons/webextensions/api/sidebaraction/gettitle/index.md

@@ -0,0 +1,100 @@
+---
+title: sidebarAction.getTitle()
+slug: Mozilla/Add-ons/WebExtensions/API/sidebarAction/getTitle
+l10n:
+  sourceCommit: b8a0743ca8b1e1b1b1a95cc93a4413c020f11262
+---
+
+{{AddonSidebar}}
+
+获取侧边栏的标题。
+
+就像你可以使用 {{WebExtAPIRef("sidebarAction.setTitle()")}} 在每个标签上设置标题一样，你也可以通过将标签页的 ID 传递给此函数来检索特定于标签页的标题。
+
+这是一个返回 [`Promise`](/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Promise) 的异步函数。
+
+## 语法
+
+```js-nolint
+let gettingTitle = browser.sidebarAction.getTitle(
+  details               // 对象
+)
+```
+
+### 参数
+
+- `details`
+
+  - : `object`。包含以下属性的对象：
+
+    - `tabId` {{optional_inline}}
+      - : `integer`。获取特定于给定标签页的侧边栏的标题。
+    - `windowId` {{optional_inline}}
+      - : `integer`。获取特定于给定窗口的侧边栏的标题。
+
+<!---->
+
+- 如果同时提供了 `windowId` 和 `tabId`，函数将失败且返回的 promise 将被拒绝。
+- 如果同时省略 `windowId` 和 `tabId`，则返回全局标题。
+
+### 返回值
+
+[`Promise`](/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Promise)，将兑现为包含侧边栏标题的字符串。
+
+## 浏览器兼容性
+
+{{Compat}}
+
+## 示例
+
+在用户点击浏览器操作时在“这”和“那”之间切换标题：
+
+```js
+function toggleTitle(title) {
+  if (title === "this") {
+    browser.sidebarAction.setTitle({ title: "那" });
+  } else {
+    browser.sidebarAction.setTitle({ title: "这" });
+  }
+}
+
+browser.browserAction.onClicked.addListener(() => {
+  let gettingTitle = browser.sidebarAction.getTitle({});
+  gettingTitle.then(toggleTitle);
+});
+```
+
+{{WebExtExamples}}
+
+> [!NOTE]
+> 此 API 基于 Opera 的 [`chrome.sidebarAction`](https://help.opera.com/en/extensions/sidebar-action-api/) API。
+
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