Modern JavaScript from the Beginning - Second Edition - Logical Assignment

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Information Technology (IT), Architecture
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of the OR assignment operator?
To assign a value if the variable is truthy
To assign a value if the variable is falsy
To assign a value if the variable is null
To assign a value if the variable is undefined
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a shorthand for checking if a variable is falsy and assigning a value?
a &&= 10
a = a && 10
a ||= 10
a = a ?? 10
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the AND assignment operator do?
Assigns a value if the variable is falsy
Assigns a value if the variable is truthy
Assigns a value if the variable is null
Assigns a value if the variable is undefined
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which assignment operator is less commonly used according to the tutorial?
Nullish coalescing operator
Logical NOT operator
AND assignment operator
OR assignment operator
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which operator is used to assign a value only if the variable is null or undefined?
Logical NOT operator
Nullish coalescing operator
AND assignment operator
OR assignment operator
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the nullish coalescing operator differ from the OR operator?
It checks only for null or undefined values
It checks for zero and empty strings
It checks for truthy values
It checks for falsy values
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What will be the value of C if it is initially set to null and then assigned using the nullish coalescing operator with 20?
20
undefined
null
0
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