
js Quiz
Authored by Ebulfez Seferov
Other
8th Grade
Used 1+ times

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40 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Question: Do you know what will be the output of this code?
Sual: Bu kodun nəticəsinin nə olacağını bilirsinizmi?
console.log(typeof typeof 1 );
String
number
1
true
Answer explanation
This actually returns "string".
This expression is evaluated from right to left.
The first sub-expression evaluated actually is typeof 1 which will return "number".
Only after that the next sub-expression is evaluated which now is typeof "number" which returns "string".
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Question: Do you know what will be the output of this code?
let array=[1,2,3];
array[6]=9;
console.log(array[5]);
Sual: Bu kodun nəticəsinin nə olacağını bilirsin
undefined
1
2
9
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Question: Can you guess what will be the output of the code below?
console.log(typeof NaN);
Sual: Aşağıdakı kodun nəticəsinin nə olacağını təxmin edə bilərsinizmi?
NaN
number
null
undefined
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Question: Do you know what will be the output of this code?
console.log(false=='0');
Bu kodun nəticəsinin nə olacağını bilirsinizmi?
false
true
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Question: Do you know what will be the output of this code?
console.log("This is a string." instanceof String);
Bu kodun nəticəsinin nə olacağını bilirsinizmi
true
false
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Question: Do you know what will be the output of this code?
const numbers = [33, 2, 8];
numbers.sort();
console.log(numbers[1])
Bu kodun nəticəsinin nə olacağını bilirsinizmi?
33
2
8
1
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
If you type the following code in the console window, what result will you get?
3 > 2 > 1 === false;
Konsol pəncərəsində aşağıdakı kodu yazsanız, hansı nəticəni əldə edəcəksiniz?
true
false
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