typeof (JavaScript)
typeof is an operator that returns a string naming the type of a value, such as "number", "string", or "object". It is used to check what kind of data you have.
Welcome to LearnCodingFast — free, interactive programming lessons covering Python, JavaScript, Java, C++, C#, SQL, HTML/CSS, React, AI and more. Every course is hands-on with examples you can run in your browser.
- Browse all courses
- Read the blog
- Coding tools and playgrounds
- Quick learn — cheat sheets and quizzes
- About LearnCodingFast
Loading interactive version…