Course Content

Introduction to JavaScript (staging)

1. Introduction

Writing our first code Output Using Variables 1/2 Output Using Variables 2/2

2. JavaScript syntax

JavaScript Syntax JavaScript Variables JavaScript Operators Identifiers in JavaScript Naming Identifiers Reserved keywords in JavaScript Naming Convention in JavaScript. Case Styles Variables Naming Convention Boolean Naming Convention Constant Naming Convention Function & Classes Naming Convention Multiline Strings Multiline Strings. Concatenating Commenting in JavaScript Commenting in JavaScript. Multi-line Comments

Constant 1/3

What are Constants?

Constants are created just like the var and let. We use the const keyword for initializing constants, for example.


              12
            
const  NUMBER = 58;
console.log(NUMBER);

Variables declared with const are very much similar to the variables declared with the let keyword, but the only difference is that we cannot reassign values to the variables declared with the const keyword.


              123
            
const  PI = 3.141592653589793;
PI = 3.14; // error
console.log(PI);

Task

Declare a variable by using the const keyword with the identifier FIXED and assign the value 10 to it also display the value on the console.

Task

Declare a variable by using the const keyword with the identifier FIXED and assign the value 10 to it also display the value on the console.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Section 3. Chapter 9

Constant 1/3

What are Constants?

Constants are created just like the var and let. We use the const keyword for initializing constants, for example.


              12
            
const  NUMBER = 58;
console.log(NUMBER);


              123
            
const  PI = 3.141592653589793;
PI = 3.14; // error
console.log(PI);

Task

Declare a variable by using the const keyword with the identifier FIXED and assign the value 10 to it also display the value on the console.

Task

Declare a variable by using the const keyword with the identifier FIXED and assign the value 10 to it also display the value on the console.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Section 3. Chapter 9

Constant 1/3

What are Constants?

Constants are created just like the var and let. We use the const keyword for initializing constants, for example.


              12
            
const  NUMBER = 58;
console.log(NUMBER);


              123
            
const  PI = 3.141592653589793;
PI = 3.14; // error
console.log(PI);

Task

Declare a variable by using the const keyword with the identifier FIXED and assign the value 10 to it also display the value on the console.

Task

Declare a variable by using the const keyword with the identifier FIXED and assign the value 10 to it also display the value on the console.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

What are Constants?

Constants are created just like the var and let. We use the const keyword for initializing constants, for example.


              12
            
const  NUMBER = 58;
console.log(NUMBER);


              123
            
const  PI = 3.141592653589793;
PI = 3.14; // error
console.log(PI);

Task

Declare a variable by using the const keyword with the identifier FIXED and assign the value 10 to it also display the value on the console.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Section 3. Chapter 9

Switch to desktop for real-world practiceContinue from where you are using one of the options below