Web Reference: A JavaScript variable can hold 8 types of data. 7 Primitive Data Types and 1 Object Data Type. The Object data type can hold many different object types. Feb 26, 2026 · It’s not a perfect language. It has quirks. But the audacity of developers constantly improving it makes it powerful. Before we dive into JavaScript variables and data types, let’s take a quick look at how it all started. Let’s get going 🚀 Jan 19, 2026 · JavaScript data types define what kind of values a variable can hold and how those values behave in a program. They determine how data is stored in memory and how operations like comparison, calculation, and conversion work.
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