JavaScript Syntax

JavaScript Syntax:

JavaScript Syntax is a set of rules which defines that our JavaScript program has the correct structure or not.

In the program we usually perform the following things:

Declaration of variables
Assignment of values.
Computation of values by using operators

//declaration of variables

const firstNumber = 100;

const secondNumber = 5;

const thirdNumber = firstNumber + secondNumber;

console.log(thirdNumber);


              12345
            
//declaration of variables
const firstNumber = 100;
const secondNumber = 5;
const thirdNumber = firstNumber + secondNumber;
console.log(thirdNumber);

Note:

To be an expert JavaScript developer, we should have a clear understanding of values, variables, operators, and their syntaxes.

JavaScript values :

A value is the representation of some entity that can be executed by a program.

In JavaScript there are two types of values:

Fixed values are known as literals.
Variables values are known as variables.

JavaScript literals:

JavaScript literals are values that cannot be changed, you do not need any type of keyword to write literals.

JavaScript literals syntax:

A JavaScript literal can be a numeric value, string, floating-point value, a boolean value, or even an object. In simple words, any value is literal.

//numerical literal

const firstNumber= 1123;

const secondNumber = 1334;

console.log(firstNumber);

console.log(secondNumber);

// Boolean literal

const isSunny= true;

console.log(isSunny);

//string literal

const greeting = "hello-world";

console.log(greeting);

//array literal

const numberList =[1,2,3,4,5,6];

console.log(numberList);


              1234567891011121314151617
            
//numerical literal
const firstNumber= 1123;
const secondNumber = 1334;
console.log(firstNumber);
console.log(secondNumber);

// Boolean literal
const isSunny= true;
console.log(isSunny);

//string literal
const greeting = "hello-world";
console.log(greeting);

//array literal
const numberList =[1,2,3,4,5,6];
console.log(numberList);

Note: The complete detail of each literal will be discussed later in the course.

Aufgabe

Swipe to start coding

Assign the numerical literal 1000 to the variable numberOfStudents and show the value on the console.

Lösung

const numberOfStudents = 1000;

console.log(numberOfStudents);

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Abschnitt 2. Kapitel 1

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