Are data types available in JavaScript?
💡 Model Answer
Yes, JavaScript has a set of built‑in data types that are used to represent values. They are divided into primitive types and reference types. Primitive types include Number, String, Boolean, null, undefined, Symbol, and BigInt. These values are immutable and are stored directly in the variable. Reference types are objects, such as Object, Array, Function, Date, RegExp, and custom classes. They are stored as references to memory locations. JavaScript is dynamically typed, so a variable can hold any type at any time, and type coercion occurs during operations. Understanding these types is essential for writing correct code, handling type conversions, and avoiding bugs like unexpected truthiness or prototype chain issues.
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