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What Is NaN: A Deeper Dive Into JavaScript's Implementation of the IEEE-754 Floating Point Standard
Updated on · 6 min read|NaN, or 'Not a Number', is a special value in JavaScript and TypeScript (as well as many other programming languages) that represents an undefined or unrepresentable value resulting from an arithmetic operation. It is often used as a placeholder for a missing numerical value or as a way to signify an error. However, what is the type of NaN in JavaScript?