In this tutorial, we will learn about Data Types in JavaScript. The data type of a variable simply tells us what kind of data that variable can store and how much size of data it can hold. Java Script provides us with a variety of Data Types we will learn about these data types.
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Primitive data types:
| Data Type | Description |
|---|---|
| String | Represents a sequence of characters e.g. “hello” |
| Number | Represents numeric values e.g. 100 |
| Boolean | Represents boolean value either false or true |
| Undefined | Represents undefined value |
| Null | Represents null i.e. no value at all |
Non-primitive data types:
| Data Type | Description |
|---|---|
| Object | Represents instance through which we can access members |
| Array | Represents a group of similar values |
| RegExp | Represents regular expression |
Parvesh Sandila is a passionate web and Mobile app developer from Jalandhar, Punjab, who has over six years of experience. Holding a Master’s degree in Computer Applications (2017), he has also mentored over 100 students in coding. In 2019, Parvesh founded Owlbuddy.com, a platform that provides free, high-quality programming tutorials in languages like Java, Python, Kotlin, PHP, and Android. His mission is to make tech education accessible to all aspiring developers.​