Data Types

JavaScript has several built-in data types that are used to represent different kinds of values. Some commonly used data types include:

• Number: Used for numeric values, including integers and floating-point numbers.
• String: Used for representing textual data, enclosed in single or double quotes.
• Boolean: Represents a logical value, either true or false.
• Undefined: A variable that has been declared but has not been assigned a value.
• Null: The null data type represents the intentional absence of any object value. It is used to assign an empty or non-existent value to a variable.
• Object: A collection of key-value pairs, enclosed in curly braces.

Examples:

1let age = 25; // Number
2let name = 'John Doe'; // String
3let isStudent = true; // Boolean
4let numbers; // Undefined
5let strings = null; // Null
6let person = { name: 'John', age: 30, profession: 'Developer' }; // Object