Should I be able to write React Hello World from memory?
Yes. Writing it from scratch and explaining each line confirms you understand the scripts, the root element, createRoot, and render. Copying it without understanding is not mastery.
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More FAQs in Episode 1 Checklist: What to Master Before Episode 2
You should be able to explain what React is in your own words, distinguish React from ReactDOM, render Hello World via CDN from scratch, understand basic JSX, and describe the rendering flow from JSX to DOM.
Episode 2 builds directly on Episode 1. A shaky foundation makes every later episode feel harder than it actually is. Spending an extra hour on the basics saves days of confusion later.
Yes, at a basic level. You should know that JSX looks like HTML but compiles to JavaScript, and you should be able to name at least one difference from HTML, such as using className instead of class.
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