Literals in JavaScript

JavaScript literals are values that are represented directly in the source code. They are not variables, but rather fixed values that cannot be changed. JavaScript supports a variety of literal types, including:

• String literals are enclosed in double or single quotes, e.g., "hello world" or 'hello world'.

• Numeric literals can be integers or floating-point numbers, e.g., 123 or 123.45.

• Boolean literals can be either true or false, e.g., true or false.

• Object literals are collections of key-value pairs enclosed in curly braces, e.g., { name: "John Doe", age: 30 }.

• Array literals are lists of values enclosed in square brackets, e.g., [1, 2, 3, 4].

Here is an example of a JavaScript program that uses literals:

    var myName = "John Doe";

    var myAge = 30;

    var myObject = {

        name: myName,

        age: myAge

    };

    var myArray = [1, 2, 3, 4];

This program creates four variables: myName, myAge, myObject and myArray. The myName variable is assigned the string literal "John Doe", the myAge variable is assigned the numeric literal 30, the myObject variable is assigned the object literal { name: "John Doe", age: 30 }. and the myArray variable is assigned the array literal [1, 2, 3, 4].

Literals are a fundamental part of JavaScript programming. They are used to represent values in the source code, and they can be used to initialize variables, create objects, and build arrays.