Зміст курсу

Introduction to JavaScript (staging)

1. Introduction

2. JavaScript syntax

Null

The data type null represents that there is no value. It is a primitive value in javascript.

To have a better understanding of null, we must know these two features about null:

null provides the non-existent value or empty value.
null has to be assigned to a variable as it is not assigned by default (unlike the undefined).


              12
            
let number = null;
console.log(number);

Завдання

Swipe to show code editor

Declare a variable selectColor and assign the value of null to the variable and display the value of the variable.

Перейдіть на комп'ютер для реальної практикиПродовжуйте з того місця, де ви зупинились, використовуючи один з наведених нижче варіантів

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Секція 3. Розділ 30

The data type null represents that there is no value. It is a primitive value in javascript.

To have a better understanding of null, we must know these two features about null:

null provides the non-existent value or empty value.
null has to be assigned to a variable as it is not assigned by default (unlike the undefined).


              12
            
let number = null;
console.log(number);

Завдання

Swipe to show code editor

Declare a variable selectColor and assign the value of null to the variable and display the value of the variable.

Все було зрозуміло?

Дякуємо за ваш відгук!

Секція 3. Розділ 30

The data type null represents that there is no value. It is a primitive value in javascript.

To have a better understanding of null, we must know these two features about null:

null provides the non-existent value or empty value.
null has to be assigned to a variable as it is not assigned by default (unlike the undefined).


              12
            
let number = null;
console.log(number);

Завдання

Swipe to show code editor

Declare a variable selectColor and assign the value of null to the variable and display the value of the variable.

Все було зрозуміло?

Дякуємо за ваш відгук!

The data type null represents that there is no value. It is a primitive value in javascript.

To have a better understanding of null, we must know these two features about null:

null provides the non-existent value or empty value.
null has to be assigned to a variable as it is not assigned by default (unlike the undefined).


              12
            
let number = null;
console.log(number);

Завдання

Swipe to show code editor

Declare a variable selectColor and assign the value of null to the variable and display the value of the variable.

Секція 3. Розділ 30