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react

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Current LevelInitiate
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  • The React Mental Model & JSX Syntax
  • Component State with useState
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Components & State•Lesson 2

Component State with useState

Regular local variables reset every time a component renders. The useState hook declares a state variable that React preserves in memory across renders. When you call the setter function (setCount), React schedules a re-render to update the display.

> **Key Takeaway:** useState preserves values between re-renders and instructs React to update the screen when state changes.
Python 3.11
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Interactive Challenge
+50 XP
Challenge Objective

useState preserves values between re-renders and instructs React to update the screen when state changes.

solution.py
UTF-84 SpacesAuto-saved
cpython3.11:~/workspace
CPython 3.11.8 (WASM)
$python3 -u solution.py
Click "Compile & Run" (or press Ctrl + Enter) to compile AST, verify bytecode, and execute the solution.