Jan 8, 2026 · The typeof operator returns a string indicating the type of the operand's value.

The typeof operator returns the data type of a JavaScript variable. In JavaScript, a primitive value is a single value with no properties or methods. JavaScript has 7 primitive data types: The typeof …

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.

Dec 13, 2024 · The typeof operator in JavaScript is used to determine the data type of a value or variable. It returns a string indicating the type, such as "string", "number", "boolean", "object", etc.

In this tutorial, you'll learn how to use the JavaScript typeof operator that returns a string representing the type of a value.

Sep 4, 2025 · Here's everything you need to know about the typeof operator so you don't waste time on the same mistakes. You'll walk away knowing exactly when to use typeof, what it actually returns, …

Apr 11, 2025 · The typeof operator in JavaScript checks and returns a string of the data type of a variable. It can return up to nine possible data types for JavaScript variables, including string, …

You cannot use typeof to define if a JavaScript object is an array or a date. Both array and date return object as type. typeof is an ECMAScript1 (JavaScript 1997) feature. It is supported in all browsers: …

Sep 30, 2023 · The typeof operator is used to get the data type (returns a string) of its operand. The operand can be either a literal or a data structure such as a variable, a function, or an object.

Dec 9, 2022 · In this article, you will learn how to use the typeof operator, instances when you should not use typeof, and the best way to check type in JavaScript for such instances.