Contenido del 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);
Tarea
Declare a variable numberOfItems and assign the value of undefined to the variable and show the value of the variable.
Tarea
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.
Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones¿Todo estuvo claro?
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);
Tarea
Declare a variable numberOfItems and assign the value of undefined to the variable and show the value of the variable.
Tarea
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.
Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones¿Todo estuvo claro?
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);
Tarea
Declare a variable numberOfItems and assign the value of undefined to the variable and show the value of the variable.
Tarea
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.
Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones¿Todo estuvo claro?
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);
Tarea
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.
Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opcionesCambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones