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

Boolean 2/4

Boolean Data Type

We use the typeof operator to check the data type of variables, for example.


              1234
            
let isRaining = true;
console.log(typeof isRaining);
// or like this
console.log(typeof(isRaining));

As you can see in the above code we declared a variable named isRaining with the value of true, and its data type is boolean as expected.

Tarefa

Declare a variable with the name isSunRises and set its value as true. Then check the type of isSunRises by using typeof() and display the output.

Tarefa

Declare a variable with the name isSunRises and set its value as true. Then check the type of isSunRises by using typeof() and display the output.

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Seção 3. Capítulo 16

Boolean 2/4

Boolean Data Type

We use the typeof operator to check the data type of variables, for example.


              1234
            
let isRaining = true;
console.log(typeof isRaining);
// or like this
console.log(typeof(isRaining));

As you can see in the above code we declared a variable named isRaining with the value of true, and its data type is boolean as expected.

Tarefa

Declare a variable with the name isSunRises and set its value as true. Then check the type of isSunRises by using typeof() and display the output.

Tarefa

Declare a variable with the name isSunRises and set its value as true. Then check the type of isSunRises by using typeof() and display the output.

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

Tudo estava claro?

Seção 3. Capítulo 16

Boolean 2/4

Boolean Data Type

We use the typeof operator to check the data type of variables, for example.


              1234
            
let isRaining = true;
console.log(typeof isRaining);
// or like this
console.log(typeof(isRaining));

As you can see in the above code we declared a variable named isRaining with the value of true, and its data type is boolean as expected.

Tarefa

Declare a variable with the name isSunRises and set its value as true. Then check the type of isSunRises by using typeof() and display the output.

Tarefa

Declare a variable with the name isSunRises and set its value as true. Then check the type of isSunRises by using typeof() and display the output.

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

Tudo estava claro?

Boolean Data Type

We use the typeof operator to check the data type of variables, for example.


              1234
            
let isRaining = true;
console.log(typeof isRaining);
// or like this
console.log(typeof(isRaining));

As you can see in the above code we declared a variable named isRaining with the value of true, and its data type is boolean as expected.

Tarefa

Declare a variable with the name isSunRises and set its value as true. Then check the type of isSunRises by using typeof() and display the output.

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

Seção 3. Capítulo 16

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