Converting Multi-Line Text Lists into JavaScript Arrays

One of the most frequent tasks developers encounter is transforming plain text data into structured code. Visual Studio Code's multi-cursor functionality makes this process remarkably efficient. Here's how to convert a simple text list into a properly formatted JavaScript array in seconds.

Consider this common scenario—you have a plain text list like this:

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

And you need to transform it into a JavaScript array that looks like this:

days=['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']

Rather than manually typing quotes and commas around each item, Visual Studio Code's multi-cursor feature allows you to make these changes simultaneously across all lines.

Step-by-Step Implementation in Visual Studio Code

Follow this precise sequence to transform your text list efficiently:

  1. Select the entire multi-line plain text list (highlight from the first item through the last item).
  2. Navigate to Selection > Add Cursors to Line Ends from the menu bar. This places a cursor at the end of each selected line.
  3. To select each entire line from beginning to end, hold Shift and press the Home key. On keyboards without a dedicated Home key (such as many MacBooks), hold Shift + fn and press the Left Arrow key.
  4. Type a single quote ('). This automatically wraps each line's beginning in quotes due to the multi-cursor selection.
  5. Press the Right Arrow key twice to position your cursors immediately after the closing quote on each line.
  6. Type a comma to add proper array syntax to each item.
  7. Press the Right Arrow key once more to move to the beginning of the next line.
  8. Press Delete (on Mac) or Backspace (on Windows/Linux) repeatedly to collapse all lines into a single horizontal array. Each press removes one line break.
  9. Remove the trailing comma at the end of your array (the last item shouldn't have a comma after it).
  10. Select the entire single-line array you've just created.
  11. Type a left square bracket [. VS Code will automatically add the closing bracket, wrapping your array properly.

  12. Position your cursor at the beginning of the line and type your variable declaration—in this case, days=. Your final result should be:

    days=['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']

This technique scales efficiently for lists of any size, from a handful of items to hundreds of entries. Once you've mastered this workflow, you'll find yourself applying it to convert various data formats—from API responses to database exports—into properly structured JavaScript arrays.