📄️ Variables
Variables are used to store data in a program. They act as containers that hold values, which can be used and manipulated throughout the program. In JavaScript, variables are declared using the var, let, or const keywords. This data is stored in the memory of the computer and can be accessed and modified as needed.
📄️ Data Types
In JavaScript, variables can store different types of data, such as numbers, strings, booleans, objects, arrays, and functions. These data types are used to represent different kinds of values and can be manipulated using various operations. JavaScript is a dynamically typed language, meaning that variables can change their data type during runtime.
📄️ Primitive Types
In JavaScript, a primitive type is a data type that represents a single value. We have talked about the six primitive data types in JavaScript in the last section. In this section, we will be talking about the primitive types in more detail.
📄️ Non-Primitive Types
Non-primitive data types are objects that can store multiple values and have properties and methods. JavaScript has three non-primitive data types as discussed in the Data Types section. In this section, we will be talking about the non-primitive types in more detail.