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💡 React useState – Explained Simply

Many beginners think React is confusing because the UI updates “automatically.”
But once you understand useState, everything starts to make sense.

In React, you don’t update the UI directly.
You update the state, and React takes care of the UI for you.

Example:

const [count, setCount] = useState(0);

👉 count stores the current value
👉 setCount updates the value

When you click a button and call setCount(count + 1), React:
1️⃣ Updates the state
2️⃣ Re-renders the component
3️⃣ Updates only the changed part of the UI

That’s why there is no page refresh.

❌ Common mistake beginners make:

count = count + 1;


This changes the variable but React won’t re-render.

✅ Correct way:

setCount(count + 1);


Once you understand this flow:
State change ➝ Re-render ➝ UI update

React becomes much easier.

📌 Tip for beginners:
Master useState and props before jumping into advanced hooks.

2 weeks ago | [YT] | 0

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Which HTML tag is used to display JavaScript output in React JSX?

2 weeks ago | [YT] | 0

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What will this Javascript code output?
console.log(typeof null);

2 weeks ago | [YT] | 0

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Top 5 Mistakes Beginners Make in React

-> Using too many states instead of a single structured state.
-> Forgetting to add a key in lists (map).
-> Not cleaning up side effects in useEffect.
-> Mixing UI logic with business logic in the same file.
-> Not learning basic JavaScript before jumping to React.

💡 Fix these early → You’ll become a pro faster!

3 months ago | [YT] | 2

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What is the output?

console.log(typeof NaN);

5 months ago | [YT] | 2

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In Python, what is the output?

x = [1, 2, 3]
print(x * 2)

5 months ago | [YT] | 1

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Which data structure uses FIFO (First In, First Out)?

5 months ago | [YT] | 1

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What is the time complexity of binary search in a sorted array?

5 months ago | [YT] | 2

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Which of these is not a JavaScript framework?

5 months ago | [YT] | 1

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print(0.1 + 0.2 == 0.3)

#python

5 months ago | [YT] | 1