JavaScript Masterclass - Zero to Job-Ready with Hands-On Projects - Type Conversion / 017

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Information Technology (IT), Architecture
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University
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is type conversion important when dealing with user inputs?
To make the code more readable
To ensure data is stored in the correct format
To make the code run faster
To reduce the size of the code
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What JavaScript method is used to check the type of a variable?
varType
getType
checkType
typeof
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method is used to convert a string to a number in JavaScript?
parseInt
Number
toString
convertToNumber
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does NaN stand for in JavaScript?
New Array Number
Not a Number
Null and None
Number and Null
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a falsy value in JavaScript?
0
1
Infinity
50
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What will be the boolean value of an empty string in JavaScript?
true
false
undefined
null
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following values is considered truthy in JavaScript?
Non-empty string
undefined
null
NaN
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