JavaScript has 7 primitive data types: The typeof operator returns the type of a variable or an expression. In JavaScript, null is a primitive value. However, typeof returns "object". This is a …

Apr 3, 2025 · The typeof operator returns a string indicating the type of the operand's value. An expression representing the object or primitive whose type is to be returned. The following …

Nov 9, 2020 · JavaScript has a special operator called typeof which lets you get the type of any value. In this article, we will learn how typeof is used, along with a few gotchas to watch out for.

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 …

In Java, you can use instanceOf or getClass() on a variable to find out its type. How do I find out a variable's type in JavaScript which isn't strongly-typed? For example, how do I know if the bar …

Summary: in this tutorial, you’ll learn how to use the JavaScript typeof operator that returns a string representing the type of a value. The typeof operator accepts an operand and returns a …

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. …

The typeof operator returns the type of variables and values. For example, console.log(typeof a); // number console.log(typeof '9'); // string console.log(typeof false); // boolean. The syntax of …

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 …

Jan 26, 2025 · Data types in JavaScript represent the type of value stored in the JavaScript variables. They are one of the fundamental concepts of the JavaScript programming language. …