20 questions · 30 minutes · JavaScript
JavaScript Basics: Quiz 1 practice quiz
20-question quiz covering very basic JavaScript concepts (variables, types, functions, arrays, operators).
Before you start
Answer all 20 questions. Each question carries 1 mark. No negative marking. You have 30 minutes.
You can take this without an account and you will still get the full marked review. Only signed-in attempts are saved — sign in first if you want this one kept in your history.
- Questions
- 20
- Time
- 30 minutes
- Marks
- 20
- Subject
- JavaScript
- Marking
- Server-side
What it asks
The first few questions
- What does "JS" commonly stand for in web development?
- Which keyword declares a block-scoped variable in modern JavaScript?
- Which operator checks both value and type equality?
- What is the result of typeof null in JavaScript?
16 more once you begin. Options are withheld until the attempt starts — the answer key never reaches the browser before you have been marked.