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 · 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. The string data type in JavaScript represents a sequence of characters that are surrounded by single or double quotes. 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.

JavaScript data types include primitive types: undefined, null, string, boolean, number, BigInt, and symbol, and the complex type object.

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).

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:

🚀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 most common data...

Jul 8, 2022 · Data types are classifications of specific types of data. We have numbers, Booleans (true or false), strings (character sequences enclosed in quotes ‘’ or “”) and more complex data types known as arrays and objects (we’ll look at these a bit later). For example, a, has been defined as a variable using the let keyword.