Conteúdo do Curso

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

What are Variables?

Variables are the memory locations that are used to store data. In JavaScript, we use the let, const, and var (var is not used now) keywords to declare a variable.

By using let we can re-assign the value to a variable. Values can not be reassigned if they are created using const.

The following statement creates a variable named message.


              1
            
let message;

Now we can assign some data to the variables by using the assignment operator sign (=), for example.


              12345
            
let message;
message = 'Hello';
// or you can do it in one line as well like this
// let message = 'Hello';
console.log(message);

Tarefa

Declare a variable named numberOfStudents and assign the value 100 and display it on the console.

Tarefa

Declare a variable named numberOfStudents and assign the value 100 and display it on the console.

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Seção 3. Capítulo 1

What are Variables?

Variables are the memory locations that are used to store data. In JavaScript, we use the let, const, and var (var is not used now) keywords to declare a variable.

By using let we can re-assign the value to a variable. Values can not be reassigned if they are created using const.

The following statement creates a variable named message.


              1
            
let message;

Now we can assign some data to the variables by using the assignment operator sign (=), for example.


              12345
            
let message;
message = 'Hello';
// or you can do it in one line as well like this
// let message = 'Hello';
console.log(message);

Tarefa

Declare a variable named numberOfStudents and assign the value 100 and display it on the console.

Tarefa

Declare a variable named numberOfStudents and assign the value 100 and display it on the console.

Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo

Tudo estava claro?

Seção 3. Capítulo 1

What are Variables?

Variables are the memory locations that are used to store data. In JavaScript, we use the let, const, and var (var is not used now) keywords to declare a variable.

By using let we can re-assign the value to a variable. Values can not be reassigned if they are created using const.

The following statement creates a variable named message.


              1
            
let message;

Now we can assign some data to the variables by using the assignment operator sign (=), for example.


              12345
            
let message;
message = 'Hello';
// or you can do it in one line as well like this
// let message = 'Hello';
console.log(message);

Tarefa

Declare a variable named numberOfStudents and assign the value 100 and display it on the console.

Tarefa

Declare a variable named numberOfStudents and assign the value 100 and display it on the console.

Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo

Tudo estava claro?