JavaScript in VS Code

Variables and Data Types

Learn to store and inspect values and choose suitable data representations in this beginner-friendly Visual Studio Code lesson.

Learning outcomes

Explain how to store and inspect values.
Complete the guided activity safely.
Check that you can choose suitable data representations.

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

Open the intended practice workspace in Visual Studio Code and confirm its folder name and Workspace Trust state.
Create const values for a fictional page feature.
Save the relevant files and review the Problems panel, terminal, Source Control view or browser preview as appropriate.
Check filenames, relative paths, console messages, keyboard use, mobile layout and privacy before continuing.
Confirm that you can choose suitable data representations, 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

Create const values for a fictional page feature. The expected result is to choose suitable data representations.

Completion checklist

I used the intended safe practice workspace. I completed, saved and reviewed the activity. I checked errors, paths, browser behaviour and the saved result.