JavaScript Essentials Quiz
20 questions in 25 minutes across the language, functions and scope, async JavaScript and the browser. Every question type is here: multiple choice, true/false, ordering, matching and fill-in, plus a real-world case study.
Syllabus
4 domains · 8 skills, weighted like the official blueprint.
1Language Fundamentals30% of the exam · 2 skillsMastery—
2Functions and Scope25% of the exam · 2 skillsMastery—
3Async JavaScript25% of the exam · 2 skillsMastery—
4The DOM and the Browser20% of the exam · 2 skillsMastery—
Sample questions with answers
10 questions from the JS-ESS bank, with an explanation for every option. No sign-up needed.
Questions about this exam
How many questions are in a full JavaScript Essentials Quiz, and how long is it?
20 questions in 25 minutes. Each mock draws questions from every domain in proportion to its weight, so the mix matches the blueprint.
What score do you need to pass it?
Results are reported from 0 to 100, and 70 is the passing score used in these mocks. Harder questions carry more weight.
What does the JavaScript Essentials Quiz cover?
4 domains: Language Fundamentals (30%), Functions and Scope (25%), Async JavaScript (25%) and The DOM and the Browser (20%).
How can I practise for it?
Start with the free 15-question diagnostic to find your weak spots, drill any skill with an explanation after every answer, retry your mistakes with spaced review, then sit timed full mocks.
How is my readiness score worked out?
It weighs your recent answers on each skill by difficulty, combines the skills by their exam weight into a predicted score, and reports your chance of reaching the pass mark. How scoring works