Full Stack Web Development MASTERY Course - Novice to Expert - Iterators in JavaScript
Interactive Video
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Information Technology (IT), Architecture
•
University
•
Practice Problem
•
Hard
Wayground Content
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of an iterator in JavaScript?
To traverse over a list or collection
To sort elements in a collection
To delete elements from a collection
To modify elements in a collection
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method is essential for an iterator to function properly?
previous
next
end
start
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the 'done' property signify in an iterator?
The current element in the sequence
Whether the sequence has more elements to iterate
The index of the current element
The total number of elements
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example function, what is the initial value of the 'counter' variable?
1
5
0
10
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when the 'counter' variable reaches 5 in the example function?
The 'done' property is set to true
The 'value' property is set to 5
The 'value' property is set to undefined
The 'done' property is set to false
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is returned by the 'next' method when there are no more elements to iterate?
A 'done' property set to false
A 'value' property set to undefined
A 'done' property set to true
A value of 0
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the summary section emphasize about iterators?
Iterators are used for sorting arrays
Iterators define a sequence and return values
Iterators are only used in JavaScript
Iterators are not useful in programming
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