One place to revise
everything before the
next interview.
JavaScript, HTML, CSS and React — distilled into syntax cards, theory, version diffs, runnable playgrounds and 600+ interviewer-style Q&A. Track what you know, drill what you don't.
six surfaces
Everything you need to revise, in one place.
Theory
Chapter-length articles with diagrams, drop-caps, and code examples — the conceptual backbone.
Browse chapters →Syntax
One-concept cards: snippet, explanation, and annotated output. Pin the tricky ones.
Open card grid →Versions
Before/after diffs across every ES/CSS/React release — what changed and why it shipped.
View diffs →Playground
Live runnable sandboxes: toggle controls and watch the output update in real time.
Open sandbox →Q&A
Core and advanced questions, segmented by level (Fresher / Experienced / Expert).
Read Q&A →Drill
SM-2 flashcard loop. Pick your stacks, level, and sources — the scheduler finds your weak spots.
Start a session →How people use it
Pick the mode that matches the hours you have left.
Full revision
Walk every topic across JS/HTML/CSS/React. Marks each card 'I know this' or 'Review again' so you can return to weak spots.
Daily drill
Flashcard-style. 10 questions, pulled from topics you've marked weak. Builds a streak so revising sticks.
Tomorrow I have an interview
A curated 90-minute sprint of the questions most asked across the stack you select. No theory rabbit holes.