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Quiz on Array in JavaScript

Quiz on Array in JavaScript

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Question 1 of 10

1. Question

Which of the following is a correct way to create an array in JavaScript?

let arr = “apple”, “banana”;
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let arr = array(“apple”, “banana”);
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let arr = [“apple”, “banana”];
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let arr = {“apple”, “banana”};
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Question 2 of 10

2. Question

What will be the output of fruits[1] if let fruits = [“apple”, “banana”, “mango”];?

apple
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banana
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mango
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undefined
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Question 3 of 10

3. Question

Which method adds a new element at the end of an array?

add()
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push()
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append()
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insert()
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Question 4 of 10

4. Question

Which method removes the last element of an array?

pop()
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remove()
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delete()
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cut()
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Question 5 of 10

5. Question

What is the index of the first element in a JavaScript array?

1
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0
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-1
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Depends on array type
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Question 6 of 10

6. Question

How can you find the number of elements in an array?

count()
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size()
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length
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total()
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Question 7 of 10

7. Question

Which method adds an element to the beginning of an array?

start()
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shift()
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unshift()
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prepend()
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Question 8 of 10

8. Question

What does the splice() method do in arrays?

Joins two arrays
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Removes and/or adds elements
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Reverses the array
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Converts array to string
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Question 9 of 10

9. Question

What is the output of typeof [1, 2, 3] in JavaScript?

“array”
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“object”
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“list”
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“number”
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Question 10 of 10

10. Question

Which loop is best suited to access all items in an array?

while
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if
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switch
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for
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