UseEffect in React js
The useEffect hook is a function that allows you to perform side effects in your React components. Side effects are anything that affects something outside your component, such as fetching data, updating the DOM, or setting timers.
The useEffect hook accepts two arguments: a function that contains the side effect code, and an optional array of dependencies that controls when the effect runs.
By default, the effect runs on every render, but you can use the dependency array to limit it to certain conditions, such as when a prop or state value changes.
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