JavaScript Data Types - W3Schools
JavaScript Types are Dynamic JavaScript has dynamic types. This means that the same variable can be used to hold different data types:
typeof - JavaScript | MDN - MDN Web Docs
Jul 8, 2025 · The typeof operator returns a string indicating the type of the operand's value.
Getting type of a variable in JavaScript - GeeksforGeeks
Sep 27, 2025 · To get the data type of a variable, we use the typeof operator. JavaScript is a "dynamically typed" programming language. In such languages, the type of a variable can change …
JavaScript Type Checking – How to Check Type in JS with typeof()
Dec 9, 2022 · To validate variables by checking their types in JavaScript, you can use the typeof operator. Type checking in JavaScript is not straightforward for non-primitive data types and specific …
JavaScript Variables and Data Types - w3buddy.com
Learn JavaScript variables and data types with examples. Understand var, let, const, primitive vs object types, and how to use the typeof operator.
JavaScript Types: What Are They and How Do You Check Them?
Aug 1, 2025 · But what types are available, and why do they matter? What Are JavaScript’s Data Types? Every value in JavaScript has a type, one of these nine: Number String Boolean Null …
How to check the type of a variable in JavaScript · CoreUI
Nov 6, 2025 · Learn how to check variable types in JavaScript using typeof operator and other methods for robust type checking.
JavaScript typeof - W3Schools
Primitive Data Types In JavaScript, a primitive value is a single value with no properties or methods. JavaScript has 7 primitive data types: string number boolean bigint symbol null undefined The typeof …