Built-in object types can be: objects, arrays, dates, maps, sets, intarrays, floatarrays, promises, and more. A JavaScript variable can hold any type of data. In programming, data types is an important concept. To be able to operate on variables, …

There are altogether 8 basic data types in JavaScript. Textual data. An integer or a floating-point number. An integer with arbitrary precision. Any of two values: true or false. A data type whose variable is not initialized. Denotes a null value. A data type whose instances are unique and immutable. Key-value pairs of collection of data.

Mar 8, 2025 · In JavaScript, each value has a data type, defining its nature (e.g., Number, String, Boolean) and operations. Data types are categorized into Primitive (e.g., String, Number) and Non-Primitive (e.g., Objects, Arrays).

Aug 21, 2024 · Primitive data types are the built-in data types provided by JavaScript. They represent single values and are not mutable. JavaScript supports the following primitive data types: Number data type in JavaScript can be used to hold decimal values as well as values without decimals. Example: Below is an example.

Jan 29, 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: Represents numeric values (integers and decimals). 2. String: Represents text enclosed in single or double quotes. let s = "Hello, World!"; 3.

Data types basically specify what kind of data can be stored and manipulated within a program. There are six basic data types in JavaScript which can be divided into three main categories: primitive (or primary), composite (or reference), and special data types. String, Number, and Boolean are primitive data types.

Summary: in this tutorial, you will learn about JavaScript data types and their unique characteristics. JavaScript has the primitive data types: null; undefined; boolean; number; string; symbol – available from ES2015; bigint – available from ES2020; and a complex data type object.

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, a variable can at one moment be a string and then store a number:

In JavaScript, data types determine the type of value stored in a variable. JavaScript has both primitive data types (which include String, Number, Boolean, Undefined, Null, Symbol, and BigInt) and non-primitive data types (Object, Array, Function).

🚀Data types help JavaScript know what kind of data you’re working with. 🚀Use typeof to check the type of a variable. 🚀Strings, numbers, booleans, arrays, and objects are the...