Certification

One paper across the whole language: how the web works, everyday JavaScript, then scope, prototypes and promises, and finally the event loop, performance, workers and browser security. Sat in one two-and-a-half-hour sitting.

Time

2½ hours

Questions

65

Pass

70%

One paper across the whole type system: basic types and inference, functions and object shapes, unions and narrowing, generics and the utility types built from them, classes, the advanced type-level features behind library code, and the modules, tsconfig strictness and real-world habits that make a typed codebase trustworthy. Sat in one two-hour sitting.

Time

2 hours

Questions

50

Pass

70%

One paper across the whole course: JSX, components and props through state and effects, composition with context and custom hooks, the performance model behind re-renders, and the real-world craft — error boundaries, portals, forwardRef, Suspense — that separates a demo from a shipped component. Sat in one sitting a little over two hours.

Time

140 minutes

Questions

60

Pass

70%

One paper across the whole course: what React Native is and Expo vs. bare workflow, core components and Flexbox layout, interactivity and virtualized lists, navigation concepts, platform and native fundamentals, and the performance and shipping craft that gets an app into real users' hands. Sat in one two-hour sitting.

Time

2 hours

Questions

50

Pass

70%

One paper across the whole course: what an agent is and how to keep control of one, the daily craft of context, prompting and verification, then configuration with CLAUDE.md, skills, hooks and MCP, and finally scaling across sessions and CI. Sat in one two-hour sitting.

Time

2 hours

Questions

60

Pass

70%

One paper across the whole foundation: document structure and semantic HTML, forms and accessibility, the box model and the cascade, flexbox and grid layout, and responsive, polished visual design. Sat in one sitting a little over two hours.

Time

140 minutes

Questions

60

Pass

70%

One paper across the whole course: rendering strategy trade-offs from CSR through streaming SSR, state management at scale, performance engineering against Core Web Vitals, micro-frontends and architecture at scale, design systems, and worked interview scenarios. Sat in one two-hour-twenty sitting.

Time

140 minutes

Questions

55

Pass

70%

One paper across the whole course: Big-O reasoning grounded in real frontend scenarios, array and string patterns, hashing, recursion and the call stack, trees including the DOM itself, linked lists and an LRU cache, graphs lightly, sorting and searching, and applying it all to debouncing and list virtualization. Sat in one two-hour sitting.

Time

2 hours

Questions

50

Pass

70%