← JS Foundations — Concept ChecksPreview
Tech Session
The Loop-Closure Gotcha
The single most famous JavaScript interview gotcha — do you actually know why var prints 3, 3, 3 in a loop but let prints 0, 1, 2?
7Questions
20 minTime limit
60%Passing score
Unlimited — latest score keptAttempts
Randomized optionsOne at a time