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The logical NOT operator (!) inverts 0 (false) to true.

JSX stands for JavaScript XML, used in React.

useState() manages state in functional components.

trim() removes whitespace from both ends of a string.

async/await simplifies handling asynchronous operations with promises.

Array.isArray() checks if a value is an array.

Due to floating-point arithmetic, 0.1 + 0.2 approximates to 0.30000000000000004.

The onmouseover event triggers when the mouse hovers over an element.

JSON.parse parses a JSON string and returns a JavaScript object.

const declares a constant variable in JavaScript.

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