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Prerequisites

You should know how to write basic Python — variables, functions, loops, dictionaries. You don’t need to be an expert. If you’ve built a simple FastAPI app or followed a Python tutorial, you have enough knowledge to follow along. 
# If you can read and understand this, you're ready:
def get_user(user_id):
    users = {"1": "Sarah", "2": "John", "3": "Alice"}
    return users.get(user_id, "Unknown")

for id in ["1", "2", "3"]:
    print(get_user(id))
You don’t need any prior JavaScript experience. That’s what this course is for.
What feels hard at first (and that’s normal): destructuring syntax, closures, async/await + fetch errors, JSX, and useEffect dependency arrays. These are exactly the concepts this course is designed to make click.

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This course is for you if…

  • You know Python and want to build web application frontends
  • You’re building (or plan to build) full-stack apps with FastAPI + React
  • You want a practical, focused path through JavaScript — not a 40-hour deep dive
  • You learn best by seeing working code first, then understanding why it works

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This course is NOT for you if…

  • You’ve never programmed before — start with a Python fundamentals course first
  • You want deep JavaScript internals (prototype chains, event loop mechanics, the this keyword)
  • You’re looking for advanced React patterns (Context, Reducers, custom hooks)
  • You want to learn Vue, Angular, or Svelte — this course is React-focused
Advanced topics like TypeScript, React Router, and state management libraries are mentioned in the Next Steps section as paths to explore after this course.

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What you’ll be able to do after

By the end of this course, you’ll confidently:
  1. Read and write modern JavaScript (ES6+)
  2. Build interactive UIs with React components
  3. Fetch data from a FastAPI backend and display it
  4. Handle forms, loading states, and errors
  5. Structure a full-stack project with clean separation between frontend and backend

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Time commitment

Each lesson takes 5-15 minutes to read and practice. The full course has about 70 lessons across 9 sections.
  • Quick pass: ~10-15 hours if you read and follow along
  • Deep practice: ~20-25 hours if you type every example and experiment
Don’t rush. The most effective approach is to type the code examples yourself (don’t copy-paste) and experiment with small changes to see what happens.

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What’s next?

Ready to get started? Let’s talk about how to follow the course effectively.

How to follow this course

Tips for getting the most out of each lesson