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.

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.

Nov 19, 2025 · JavaScript supports various datatypes, which can be broadly categorized into primitive and non-primitive types. Primitive datatypes represent single values and are immutable. 1. Number: …

Aug 19, 2024 · A variable is like a box where you can store data or a reference to data. In this article, you will learn how to create and use variables. You'll also learn about the different data types in …

1 day ago · Just like it in the programming there are thing called variables just like you labels and the data types like your stuffs you putting into boxs labeled by there categories.

Mar 2, 2023 · This article provides a succinct and comprehensive cheat sheet about variables and data types in modern JavaScript. You can bookmark this page for a quick and convenient lookup later. …

Apr 26, 2025 · JavaScript has seven basic data types, which are further categorized into two groups: primitive and reference types. 3.1. Primitive Types. Primitive types are simple, immutable values that …

4 days ago · Bonus: The Common "Interview" questions 1. "What is Hoisting, and how does it differ between var, let, and const?" The "Under the Hood" Explanation: JavaScript moves variable …

JavaScript variables can be declared in 4 ways: From the examples you can guess: Variables are labels for data values. Variables are containers for storing data. Variables are identified with unique names …

Variable names are case-sensitive, so myVar, MyVar, and myvar are all different variables. But generally, it’s a good practice to avoid naming variables so similarly. Ready to learn more? Become …