Contenu du cours
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);
Swipe to start coding
Declare a variable numberOfItems and assign the value of undefined to the variable and show the value of the variable.
Solution
So, undefined variables can also be declared using the undefined keyword.
Passez à un bureau pour une pratique réelleContinuez d'où vous êtes en utilisant l'une des options ci-dessousMerci pour vos commentaires !
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);
Swipe to start coding
Declare a variable numberOfItems and assign the value of undefined to the variable and show the value of the variable.
Solution
So, undefined variables can also be declared using the undefined keyword.
Passez à un bureau pour une pratique réelleContinuez d'où vous êtes en utilisant l'une des options ci-dessousMerci pour vos commentaires !
Passez à un bureau pour une pratique réelleContinuez d'où vous êtes en utilisant l'une des options ci-dessous