Variables primitives en JavaScript
Quiz
•
Computers
•
Professional Development
•
Practice Problem
•
Hard
Gauvain Thery
Used 1+ times
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6 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Avec quoi déclarer une variable en JavaScript ?
var
const
let
public
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
const isTrue = "true";
De quel type est cette constante ?
Boolean
String
Number
Object
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
const bool1 = 0;
const bool2 = Boolean(0);
const bool3 = !bool2;
Que vaut bool3 ?
true
false
1
""
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
const bool1 = 5 < 3;
const bool2 = "hello" === "hello";
const bool3 = bool1 && bool2;
Que vaut bool3 ?
true
false
0
undefined
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Que vaut "rocket".length ?
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
const str1 = 'hello';
const str2 = 'world';
Quelles réponses écrivent 'hello world' ?
str1 + str2
str1 + ' ' + str2
str1 - str2
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