Understanding React

From the creator of "JavaScript: Understanding the Weird Parts"

Even if you've been using React for years, your mental model is likely inaccurate. That's because the best mental model is understanding how something really works.

React is wildly popular and well-established in the job market for web developers. However, to use and debug it well, you must understand how it actually works.

In this course, designed for both React beginners and experienced React devs you will come to deeply understand how React works under-the-hood by diving into the React source code itself.

Most courses teach you how to use React. In this course you will fully understand how React works, which will enable you to use and debug React well.

That knowledge will give you a clarity that will serve you well every day you use React, or React-based frameworks like Next.js or Remix.

I'm Tony Alicea, a 25-year veteran in web and software development. My goal in creating this course, just like in my other courses that have been taken by 345,000 students, is to take you deeper than anyone else into truly understanding React.

14 hours of video content are currently available, with more being posted soon!

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Course Curriculum

When you enroll you gain access to all videos, source code, and questions directly answered by me!

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  Introduction
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  The DOM and Declarative Programming
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  React Elements
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  JSX
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  Fiber and Reconciliation
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  Execution Contexts and Pausing Work
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  React DOM and Rendering
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  Events
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  State
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  Hooks, State, and Reducers
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  Adding Your Own Side Effects: useEffect
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  useRef and forwardRef
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  Custom Hooks
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  Component Design
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  useContext
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  useId and Key
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  memo, useMemo, and useCallback
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  useContext and Reducer
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  Toolchains
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  Strict Mode
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  Forms
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  React Dev Tools
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  CSS and Components
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  UPCOMING: Class Project
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  UPCOMING: Suspense and Other Hooks
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  UPCOMING: React Server Components
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  UPCOMING: Conclusion
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