JavaScript Fundamentals — Unit 1

Submitted on 22 Jun 2026 · graded on the server.

Correct

17/20

Time taken

24:18

Class rank

4/58

Percentile

93rd

showing 6 of 20

01 What does typeof return for null?Correct

02 Which method maps over an array?Correct

03 What logs first: Promise or setTimeout?Incorrect

04 Which property sets stacking order?Correct

05 What does spread syntax do on an array?Correct

06 Which command rebases a branch?Incorrect

Easy

8/8

Medium

6/8

Hard

3/4