Data types in Javascript

Data types — #1 of the 40 Essentials of Javascript

To be a successful Front Developer, one has to have strong foundation of Javascript. This series attempts to cover all the important concepts of the language.

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Programming languages all have built-in data structures, however these often differ from one language to another. This article describes both Primitive and Non-Primitive data types in Javascript.

Primitive Data Type

In Javascript, primitive type is predefined by the language and it is data that is not an object and has methods or properties. There are 7 primitive types in Javascript.

• string
• number
• undefined
• BigInt
• Boolean
• Symbol
• null

Lets have a deeper look into the datatypes.

• string — A string is a sequence of one or more characters that may consist of letters, numbers, or symbols and this object is wrapped around a string primitive.