JavaScript in VS Code

Functions

Learn to group reusable behaviour and avoid repeated logic in this beginner-friendly Visual Studio Code lesson.

Learning outcomes

  • Explain how to group reusable behaviour.
  • Complete the guided activity safely.
  • Check that you can avoid repeated logic.

Before you begin

Use a non-sensitive practice folder, inspect unfamiliar code before trusting it, and never place passwords, tokens or private information in project files.

Open official guidance ↗

Step-by-step instructions

  1. Open the intended practice workspace in Visual Studio Code and confirm its folder name and Workspace Trust state.
  2. Write and call a small greeting function.
  3. Save the relevant files and review the Problems panel, terminal, Source Control view or browser preview as appropriate.
  4. Check filenames, relative paths, console messages, keyboard use, mobile layout and privacy before continuing.
  5. Confirm that you can avoid repeated logic, then create a clear commit, backup or saved checkpoint.
Ian's practical tip: Work in one named project folder, preview after small changes, read the actual error message and keep a recoverable version before broad edits.

Practical activity

Write and call a small greeting function. The expected result is to avoid repeated logic.

Completion checklist