Sciomi uses Google Analytics to measure how the site is used. If you accept, it stores a cookie on your device. If you decline, it stores nothing on your device, but Google may still receive a basic signal that a page was opened. Sign-in and practice progress cookies are always used. No ads are shown. Details in the privacy policy

Syntax basics

Computer Science · JavaScript

Loading practice question…

About this practice set

Syntax basics is part of Computer Science (JavaScript). Questions are generated with new numbers each time you practise. Levels available: Easy. After you answer, an explanation is shown.

Example questions

A taste of what you will practise. Answers are revealed after you try.

  • Easy

    Which of these is a valid JavaScript statement?

    • let x = 5;
    • int x = 5
    • var x = 5 (no semicolon needed in blocks)
    • x := 5