VS Code的多光標編輯功能可通過三種方式提升編碼效率。首先，按住Alt（Windows/Linux）或Option（Mac）鍵並點擊不同位置可添加多個光標，隨後輸入內容即可同步編輯；其次，選中文本後使用Ctrl Shift L（或Cmd Shift L）可選中所有匹配項並分別賦予獨立光標，適用於批量重命名或添加前後綴；最後，通過Alt 點擊拖動或Shift Alt 方向鍵可在相鄰行垂直放置光標，適合列式數據或配置腳本的編輯，熟練掌握後能大幅提升效率但需注意避免誤操作。

If you've ever wanted to edit multiple lines at once in VS Code, the multi-cursor feature is a powerful tool that can save you a lot of time. It's especially useful when renaming variables, updating repetitive code blocks, or making bulk changes across different parts of your file.

Adding Multiple Cursors with the Keyboard

The most common way to use multi-cursor editing is by holding down the Alt key (on Windows/Linux) or Option key (on Mac) and clicking at different locations in your code. Each click adds a new cursor.

• Press and hold Alt
• Click where you want additional cursors
• Start typing — all cursors will edit simultaneously

This method works great when you want to make edits in completely different sections of your code. Just remember, once you start typing, every cursor will input the same characters, so be careful not to accidentally overwrite important parts.

Selecting All Matching Occurrences

Another powerful shortcut is using Ctrl Shift L (or Cmd Shift L on Mac), which selects all occurrences of the currently selected text and gives each one its own cursor.

For example:

• If you have a variable named user repeated several times in a block of code
• Highlight one instance of it
• Hit Ctrl Shift L
• Now any edit you make affects all instances at once

This is particularly handy for mass renaming or adding prefixes/suffixes across multiple lines quickly.

Using Multi-Cursors on Adjacent Lines

If you're working with vertical blocks of similar code — like list items or function calls — you can place multiple cursors vertically by pressing Alt Click and Drag with your mouse.

Alternatively, you can use Shift Alt Click and Drag to create a block selection. This is helpful when you want to insert or delete content in a column-like structure.

It's also worth trying this trick with keyboard shortcuts:

• Place your cursor at the starting point
• Hold Shift Alt
• Use the arrow keys to extend the selection vertically

This lets you edit columns of text directly, which is super useful in data-heavy files or configuration scripts.

Multi-cursor editing in VS Code might feel a bit tricky at first, but once you get used to the keyboard shortcuts and mouse gestures, it becomes second nature. The key is to experiment with different combinations depending on what kind of edits you need to perform.

Just keep in mind that while multi-cursor editing is fast, it can also lead to unintended changes if you're not paying attention — especially when modifying many lines at once. But overall, it's a solid productivity booster once you're comfortable with it.

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