Conteúdo do Curso
Introduction to JavaScript (staging)
Introduction to JavaScript (staging)
Undefined
What is Undefined
Undefined is also a data type in JavaScript just like the null. When a variable is created or declared without assigning any value to it, then the value of the variable will be set as undefined by default.
let age; console.log(age);
Tarefa
Declare a variable numberOfItems and assign the value of undefined to the variable and show the value of the variable.
So, undefined variables can also be declared using the undefined keyword.
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Undefined
What is Undefined
Undefined is also a data type in JavaScript just like the null. When a variable is created or declared without assigning any value to it, then the value of the variable will be set as undefined by default.
let age; console.log(age);
Tarefa
Declare a variable numberOfItems and assign the value of undefined to the variable and show the value of the variable.
So, undefined variables can also be declared using the undefined keyword.
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoObrigado pelo seu feedback!
Undefined
What is Undefined
Undefined is also a data type in JavaScript just like the null. When a variable is created or declared without assigning any value to it, then the value of the variable will be set as undefined by default.
let age; console.log(age);
Tarefa
Declare a variable numberOfItems and assign the value of undefined to the variable and show the value of the variable.
So, undefined variables can also be declared using the undefined keyword.
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoObrigado pelo seu feedback!
What is Undefined
Undefined is also a data type in JavaScript just like the null. When a variable is created or declared without assigning any value to it, then the value of the variable will be set as undefined by default.
let age; console.log(age);
Tarefa
Declare a variable numberOfItems and assign the value of undefined to the variable and show the value of the variable.
So, undefined variables can also be declared using the undefined keyword.
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo