Visual Studio Code 支持自動保存功能，可通過設(shè)置啟用；打開設(shè)置后搜索“Auto Save”，選擇“Files: Auto Save”并設(shè)為“onFocusChange”或“afterDelay”等模式，若選“afterDelay”可進一步設(shè)置“files.autoSaveDelay”調(diào)整延遲時間，也可通過編輯settings.json文件直接配置，啟用后能有效防止丟失工作內(nèi)容且不影響撤銷歷史，最終根據(jù)個人工作流選擇合適模式即可。

Visual Studio Code (VSCode) doesn't have a traditional "Auto Save" like some other editors, but it does offer an Auto Save feature that automatically saves your files based on your configuration. Here’s how to set it up and use it effectively.

Enable Auto Save in VSCode

To turn on auto save, you need to adjust the settings in VSCode. There are a few ways to do this:

1. Open Settings

   • Press Ctrl , (Cmd , on macOS) to open the Settings UI.
   • Or go to File > Preferences > Settings.

2. Search for "Auto Save"

   • In the search bar, type auto save.
   • Look for the setting labeled Files: Auto Save.

3. Choose an Auto Save Mode

   • Click the dropdown and select one of the following options:

     • off: Default. Files are not saved automatically.
     • afterDelay: Saves the file after a short delay when you stop typing. You can also set how long the delay is.
     • onFocusChange: Saves the file when you move focus to another tab, panel, or window.
     • onWindowChange: Saves the file when the entire VSCode window loses focus (e.g., you switch to another app).

   Most users prefer onFocusChange as it’s reliable and doesn’t save too aggressively.

Customize Auto Save Delay (Only for "afterDelay" mode)

If you choose the afterDelay option, you can control how long VSCode waits before saving:

• In Settings, search for Files: Auto Save Delay.
• Set the value in milliseconds (default is usually 1000 ms = 1 second).
• A shorter delay means faster auto saves, but may affect performance on slower machines.

Example:
Set files.autoSaveDelay to 500 for a half-second delay.

Use JSON Settings (Optional)

You can also configure auto save by editing the settings.json file directly:

1. Open Command Palette (Ctrl Shift P).
2. Type Preferences: Open Settings (JSON) and select it.
3. Add the following lines:

{
  "files.autoSave": "onFocusChange",
  "files.autoSaveDelay": 1000
}

Replace "onFocusChange" with "afterDelay" if you want timed auto saves.

Note: The files.autoSaveDelay only takes effect when files.autoSave is set to "afterDelay".

Additional Tips

• Undo history is preserved with auto save, so you won’t lose the ability to undo changes.
• Auto Save works per file — only the active file is saved when the condition is met.
• If you're using VSCode Web (e.g., GitHub Codespaces), auto save is often enabled by default for better cloud sync.

Summary

Enabling auto save in VSCode is simple:

• Go to Settings > Files > Auto Save.
• Pick a mode like onFocusChange or afterDelay.
• Optionally tweak the delay time.

It helps prevent lost work and keeps your files up to date without manual saving.
Basically, just flip the switch and choose what feels right for your workflow.

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