Common Mistakes by Junior React Developers:
Scattered useState Hooks:
useState is used in random places, making the component harder to read and debug.
Example: Defining a state variable in the middle of unrelated code or inside loops/conditionals.
Proper Way:
Always define all useState hooks at the top level of the functional component.
const [count, setCount] = useState(0);
const [name, setName] = useState(" ");
Unstructured Function Placement:
Functions are written randomly in the component without considering logical flow.
This creates confusion, especially when debugging or collaborating.
Proper Way:
Group functions logically: place event handlers together and helper functions either outside or at the bottom of the component.
Mixing JSX and Logic:
Including complex logic directly inside JSX makes the code difficult to understand.
// Poor example
<button onClick={() => { const newValue = count + 1; setCount(newValue); }}>
Increment
</button>
Proper Way:
Use well-named functions for readability:
const handleIncrement = () => setCount(count + 1);
<button onClick={handleIncrement}>Increment</button>
Not Modularizing Code:
Writing too much logic in a single component instead of breaking it into reusable components.
Proper Way:
Divide code into smaller, reusable components and maintain separation of concerns.
#javascript #react #development
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