TechnologyThe ProfessorIntermediate
Modern Front-End Architecture, a free technology course on Tomo

Modern Front-End Architecture

Like Duolingo, but for Modern Front-End Architecture. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

For the part of you with thirty open tabs that never became anything.

21 levels across 3 sections, about 42 minutes end to end, roughly 8 days at five minutes a day. It moves through Architecting the Interface, Data and Interaction, and Performance and Polish. It assumes you already know the basics.

21 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Pixel the Penguin, the guide who teaches the Modern Front-End Architecture course
Modern Front-End Architecture
with Pixel the Penguin
21
Levels
3
Sections
5
Min/day
What you'll learn

Key ideas in Modern Front-End Architecture

  • Visual repetition indicates a single reusable component definition
  • Props allow a component to stay generic by accepting external configuration
  • The single responsibility principle dictates where one component ends and another begins
  • Hardcoding values inside a component prevents it from being reused in different UI states
  • A component tree maps how smaller UI pieces nest inside larger layout containers
  • Passing a 'variant' prop lets the parent control the component's appearance
  • The process of decomposing a visual mockup into a nested component tree
  • Applying props to make a component adaptable to different contexts
  • Composition uses the 'children' prop to wrap and augment existing components
  • Inheritance creates rigid dependencies that are harder to maintain than nested components
  • Nesting components allows for flexible layouts without modifying the internal logic of the child
  • Presentational components are 'dumb' and shouldn't know where data comes from
  • Container components act as the data-fetching layer for a specific feature
  • Separating concerns makes UI components easier to test and style in isolation
  • Distinguishing between presentational and container components
  • Understanding composition as the primary method for building complex UIs
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives Modern Front-End Architecture the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

The Art of Decomposition

How does a component receive specific data or settings from the part of the app that uses it?

Get it right to open this lesson and 20 more in the app.

Course map

Where Modern Front-End Architecture takes you

Move beyond basic HTML and CSS to build scalable, high-performance web applications. Learn to architect components, manage complex state, and optimize the user experience like a professional engineer.

  1. 1

    Architecting the Interface

    • Thinking in Components
    • Managing Application State
  2. 2

    Data and Interaction

    • Handling Asynchronous Data
    • Advanced Forms and Validation
  3. 3

    Performance and Polish

    • Responsive Design Systems
    • Optimizing the Render Cycle
    • The Modern Build Pipeline

3 sections · 7 units · 21 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
The Professor

Modern Front-End Architecture is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

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Download Tomo, search Modern Front-End Architecture, and play your first lesson in under a minute.