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Discover clear, example-based answers to real JavaScript challenges. From functions, arrays, and DOM manipulation to ES6+ syntax and async programming, every response is written to help you understand how and why things work. Whether you’re building interactive sites or learning core logic, these Q&As make JavaScript easier and more powerful.

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    JavaScript Q&A's are automatically generated daily after 12:00 AM through our proprietary AI-assisted system. Just like humans, AI sometimes revisits similar questions — because new data or insights can lead to different answers. Purchase tags to help expand and support the Q&A Network.

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    How do event listeners work in the DOM?

    Asked on Friday, Aug 01, 2025

    Event listeners in the DOM allow you to execute a function when a specific event occurs on an element, such as a click or a keypress. You can add an event listener to an element using the "addEventLis…

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    What is event delegation in JavaScript?

    Asked on Thursday, Jul 31, 2025

    Event delegation is a technique in JavaScript that allows you to manage events efficiently by setting a single event listener on a parent element to handle events triggered by its child elements. This…

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    What is immutability in JavaScript and why is it important?

    Asked on Wednesday, Jul 30, 2025

    Immutability in JavaScript refers to the concept where data structures cannot be altered after they are created. This is important for ensuring predictable code behavior, especially in functional prog…

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    What is functional programming in JavaScript?

    Asked on Tuesday, Jul 29, 2025

    Functional programming in JavaScript is a programming paradigm that treats computation as the evaluation of mathematical functions and avoids changing state or mutable data. It emphasizes the use of p…

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