Modern JavaScript from the Beginning - Second Edition - Nesting, Concat and the Spread Operator
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Information Technology (IT), Architecture
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University
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Practice Problem
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of nesting an array within another array?
An array containing another array as an element
An array with one element
A string representation of the array
A single-level array with combined elements
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you access an element in a nested array?
By using the flat method
By using a single index
By using multiple indices
By using the concat method
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the concat method do with arrays?
It sorts the arrays
It removes duplicates from arrays
It combines arrays into a single array without nesting
It nests one array inside another
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which operator can be used to spread elements of one array into another?
The concat operator
The flat operator
The spread operator
The join operator
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of using the spread operator on arrays?
It combines elements into a single array
It duplicates the arrays
It nests arrays within each other
It removes elements from arrays
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the flat method do to an array?
It flattens nested arrays into a single-level array
It combines arrays into a single array
It nests arrays within each other
It sorts the arrays
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you check if a value is an array?
Using the flat method
Using the isArray method
Using the spread operator
Using the concat method
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