Multiple Choice Questions on Adding and Removing Array Elements

📚 Quick Study Guide

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• Adding Elements:
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  • push(): Adds one or more elements to the end of an array and returns the new length of the array.
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  • unshift(): Adds one or more elements to the beginning of an array and returns the new length of the array.
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  • splice(): Can add elements into the middle of an array. It modifies the original array.
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• Removing Elements:
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  • pop(): Removes the last element from an array and returns that element.
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  • shift(): Removes the first element from an array and returns that element.
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  • splice(): Can remove elements from the middle of an array. It modifies the original array.
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• Important Notes:
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  • push() and unshift() return the new length of the array.
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  • pop() and shift() return the removed element.
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  • splice() can both add and remove elements simultaneously.

🧪 Practice Quiz

1. Which method adds one or more elements to the end of an array?
   1. A. shift()
   2. B. unshift()
   3. C. pop()
   4. D. push()
2. Which method removes the first element from an array?
   1. A. pop()
   2. B. shift()
   3. C. push()
   4. D. unshift()
3. Which method adds one or more elements to the beginning of an array?
   1. A. push()
   2. B. pop()
   3. C. unshift()
   4. D. shift()
4. Which method removes the last element from an array?
   1. A. shift()
   2. B. unshift()
   3. C. pop()
   4. D. push()
5. Which method can be used to both add and remove elements from an array?
   1. A. push()
   2. B. pop()
   3. C. shift()
   4. D. splice()
6. What does the push() method return?
   1. A. The removed element
   2. B. The new length of the array
   3. C. The original array
   4. D. undefined
7. What does the pop() method return?
   1. A. The new length of the array
   2. B. The original array
   3. C. The removed element
   4. D. undefined