#Javascript

What is event bubbling in JavaScript?

What is a higher-order function in React?

Define an IIFE (Immediately-Invoked Function Expression) in JavaScript.

Analyze the following closure-based counter function and explain its output. The function creates a counter that increments by 5 each time it's called. Show the output of the first and second calls to the function.

Discuss key React and JavaScript concepts including the difference between Virtual DOM and Real DOM, the behavior of setTimeout in a single-threaded environment, and hooks like useCallback, useMemo, and useEffect. Additionally, explain the URL typing process and write a custom useState hook.