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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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How do I declare a variable in JavaScript?

Asked on Sunday, Jun 22, 2025

In JavaScript, you can declare a variable using "let", "const", or "var". "let" and "const" are preferred in modern ES6+ code due to their block scope and other benefits. let name = "Alice"; const age…

What are the different data types in JavaScript?

Asked on Saturday, Jun 21, 2025

JavaScript has several data types that can be categorized into primitive and non-primitive types. Primitive types include String, Number, Boolean, Null, Undefined, Symbol, and BigInt, while non-primit…