
Quiz Reinforcement
Quiz
•
Information Technology (IT)
•
Professional Development
•
Practice Problem
•
Medium
mehdi khalil
Used 1+ times
FREE Resource
Enhance your content in a minute
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Que retourne :
Que retourne :
console.log(typeof null);
"null"
"undefined"
"object"
"string"
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
NaN === NaN retourne :
true
false
undefined
Erreur
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Boolean([]) retourne :
false
null
true
Erreur
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Résultat de :
Résultat de :
console.log(0 || 'hello');
0
undefined
true
"hello"
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Résultat de :
Résultat de :
console.log('' && 'test');
' '
"test"
true
false
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La méthode .forEach() :
Retourne un tableau
Retourne un booléen
Ne retourne rien (undefined)
Supprime des éléments
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Différence entre == et === :
=== compare avec conversion
== compare strictement
Elles sont identiques
=== compare sans conversion de type
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