All about data types in JavaScript - Null, Undefined, Boolean, Object - 8 basic types in JS
In this video, we'll look at the basic data types in JavaScript, which are the foundation of any program. You'll learn that there are 8 basic data types in JS: seven primitive and one non-primitive. We'll explain how numbers differ from BigInt, how the special values Infinity and NaN work, and why JavaScript is considered a dynamically typed language.
We'll talk about strings and different types of quotes, including template strings with ${expressions}. You'll see examples of using the boolean type to store true and false values. We'll also explain the differences between null and undefined, which are often confusing for beginners.
We'll touch on the concept of objects, which are the basis for storing complex data structures, and we'll look at symbols, a special type for creating unique identifiers.
The video will help you figure out which data type to choose in different situations and understand how JavaScript works "under the hood." This is a great base for those who are starting to learn JS from scratch, as well as a useful review for those who want to consolidate their knowledge.
👉 After watching, you will better understand how JavaScript works and be able to avoid common mistakes when writing code.
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