JSJavaScriptBeginnerLive runner10 min

Values, Variables and Types

Values, Variables and Types with a runnable browser-safe JavaScript example.

Lesson notes

This JavaScript example runs in an isolated worker so console output can be captured safely.

valuesvariablestypes

Editable notebook cell

Starter code

const count = 3;
const active = true;
console.log(typeof count, typeof active);

Output

Live runner

Run the code to see output here.

Try this

Change one value, run it again and explain how the output changed.

Hint: Start by changing a string or array value.