const config in JavaScript

What this snippet does

const for values that never change, let for counters or state that updates over time.

Expected output

Attempt 1
Attempt 2
Attempt 3
Done after 3 attempts

Why practise typing this

Typing variables code builds muscle memory for the symbols and indentation JavaScript uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.

More JavaScript practice

• let vs constVariables · beginner
• const mutationVariables · beginner
• var hoistingVariables · beginner
• var scope leakVariables · intermediate
• typeof operatorTypes · beginner
• typeof nullTypes · beginner