如何在VS Code中通过tasks.json在侧边栏显示Markdown预览（不打开文件）

The Command You Need #

VS Code's built-in command to trigger Markdown preview is markdown.showPreviewToSide (use markdown.showPreview instead if you want a full-tab preview). To target a specific file without opening it, you'll pass the file path as an argument via the VS Code CLI.

Step-by-Step Setup #

1. Open tasks.json #

Press Ctrl+Shift+B (macOS: Cmd+Shift+B), select "Create tasks.json file from template", then choose "Others" to get a blank template.

2. Add the Preview Task #

Replace the default content with this configuration:

{
  "version": "2.0.0",
  "tasks": [
    {
      "label": "Preview test.md",
      "type": "shell",
      "command": "code",
      "args": [
        "--command",
        "markdown.showPreviewToSide",
        "${workspaceFolder}/test.md"
      ],
      "problemMatcher": []
    }
  ]
}

3. Run the Task #

• Press Ctrl+Shift+B again, select the "Preview test.md" task from the list.
• The Markdown preview will open in the side panel, and test.md won't be loaded into an editor tab.

Key Details #

• Ensure the code command is in your system PATH: install it via VS Code's command palette (Ctrl+Shift+P) by searching for "Shell Command: Install 'code' command in PATH".
• Adjust the file path in args if test.md is in a subdirectory (e.g., ${workspaceFolder}/docs/test.md).
• Swap markdown.showPreviewToSide with markdown.showPreview to open the preview in a standalone tab instead of the side panel.

内容的提问来源于stack exchange，提问作者Abhishek Chavhan