
Test z podstaw JavaScript v2
Quiz
•
Information Technology (IT)
•
9th Grade
•
Practice Problem
•
Hard
Tomasz Maciąg
Used 1+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jakiego operatora używamy do przypisywania wartości do zmiennej?
==
=
===
=>
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co zwróci wyrażenie typeof 42?
number
string
boolean
undefined
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Który operator sprawdza równość wartości i typu danych?
==
=
===
!=
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaki typ danych reprezentuje wartość null?
string
number
object
undefined
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co zwróci Boolean(0)?
true
false
null
undefined
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaki będzie wynik 5 + "5"?
10
55
NaN
Błąd
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jakie słowo kluczowe jest używane do deklarowania zmiennej, której wartość można zmieniać?
const
let
var
Obie odpowiedzi B i C
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