JavaScript Data Types - W3Schools
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.
JavaScript data types and data structures - JavaScript | MDN
Jul 8, 2025 · This article attempts to list the built-in data structures available in JavaScript and what properties they have. These can be used to build other data structures.
Data types - The Modern JavaScript Tutorial
Jul 9, 2024 · There are eight basic data types in JavaScript. Here, we’ll cover them in general and in the next chapters we’ll talk about each of them in detail. We can put any type in a variable. For example, …
JavaScript Data Types - GeeksforGeeks
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 …
JavaScript Types: What Are They and How Do You Check Them?
Aug 1, 2025 · As with almost every programming language, JavaScript treats various types of values differently. A string like “Hello world” is very different from a number like 42.
Understanding Variables and Data Types in JavaScript
1 day ago · 2.Number Data Type it can be a interger or floating point numbers, JavaScript didn't differentiate between different kids of number it store all them as floating point number. It is also …
JavaScript Types
The Eight Types of JavaScript JavaScript has 8 types: undefined, null, boolean, number, bigint, string, symbol, and object.
JavaScript Data Types - Codecademy
May 15, 2024 · Learn how to use JavaScript — a powerful and flexible programming language for adding website interactivity. Data types are used to classify eight fundamental values used for …
JavaScript Datatypes - W3Schools
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
Grammar and types - JavaScript | MDN - MDN Web Docs
Jul 8, 2025 · This chapter discusses JavaScript's basic grammar, variable declarations, data types and literals.