要在VS Code中設(shè)置默認(rèn)格式化工具，首先需安裝對(duì)應(yīng)語言的擴(kuò)展，如Prettier、Black或ESLint。 1. 打開設(shè)置並蒐索“Default Formatter”，編輯settings.json文件以指定每種語言的默認(rèn)格式化工具，例如使用"esbenp.prettier-vscode"處理JavaScript，"ms-python.black-formatter"處理Python。 2. 可選全局設(shè)置，但推薦按語言分別配置。 3. 啟用“Format on Save”功能，通過添加"editor.formatOnSave": true實(shí)現(xiàn)自動(dòng)保存格式化，也可按語言單獨(dú)控制。注意確保未在其他位置禁用格式化，必要時(shí)手動(dòng)選擇格式化工具，並確認(rèn)擴(kuò)展所需的CLI已正確安裝。

Setting a default formatter in VS Code is pretty straightforward once you know where to look. The key is understanding that it depends on both the language and the specific formatter extension you're using.

Choose an Extension First

Before setting a default, make sure you have a formatting extension installed for your language — like Prettier for JavaScript/TypeScript, Black for Python, or ESLint if you're linting as well.

• Extensions usually take over formatting automatically once installed, but sometimes they don't play nicely with others.
• If you have multiple formatters installed (eg, both Prettier and ESLint), you'll need to explicitly tell VS Code which one to use by default.

Set the Default Formatter Per Language

VS Code lets you define a default formatter based on the file type. That way, when you format a .js or .py file, it knows which tool to run.

To do this:

• Open settings ( Ctrl , or Cmd , on Mac).
• Search for "Default Formatter" .
• Click "Edit in settings.json" under the relevant section.

Your settings might look something like this:

 "[javascript]": {
  "editor.defaultFormatter": "esbenp.prettier-vscode"
},
"[python]": {
  "editor.defaultFormatter": "ms-python.black-formatter"
}

You can also set a global formatter if you want one tool to handle everything, though this isn't recommended unless you work mostly in one language.

Enable Format on Save

This step isn't required, but most people want their code formatted automatically when saving.

In your settings.json , add:

 "editor.formatOnSave": true

Or, if you prefer more control, enable it per language:

 "[html]": {
  "editor.formatOnSave": false
}

This is useful if you want to disable auto-formatting for certain file types where you might care more about manual layout.

Some Gotchas to Watch For

• Make sure formatting isn't disabled somewhere else in your config.
• If nothing happens when you save, try right-clicking the file and selecting "Format Document With..." to manually pick and confirm the formatter.
• Some extensions require additional setup beyond just installing them — like having the formatter CLI installed globally or locally in your project.

基本上就這些。 It's not complicated, but it's easy to miss a small detail like the exact extension ID or forgetting to turn on format-on-save. Once everything's aligned, though, your editor will keep your code clean without extra effort.

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