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In this unit we’ll explore JavaScript numbers in depth.
Numbers are one of the fundamental data types in JavaScript, used for all numeric operations. You’ll learn about the Number type, how JavaScript represents numbers internally using IEEE-754, and special values like NaN and Infinity.
JavaScript provides a rich set of built-in methods for validating, parsing, and formatting numbers, and we’ll cover all of them along with practical recipes for common tasks like currency formatting and handling decimal arithmetic.