Which of the following methods is used to remove the last element from an array in JavaScript?Optionsunshift()shift()pop()splice()
Question
Which of the following methods is used to remove the last element from an array in JavaScript?
Options:
unshift()
shift()
pop()
splice()
Solution
Break Down the Problem
- Identify the purpose of the methods listed in the options regarding array manipulation.
- Determine which method specifically removes the last element from an array.
Relevant Concepts
- unshift(): Adds one or more elements to the beginning of an array and returns the new length of the array.
- shift(): Removes the first element from an array and returns that removed element, altering the length of the array.
- pop(): Removes the last element from an array and returns that element, altering the length of the array.
- splice(): Changes the contents of an array by removing or replacing existing elements and/or adding new elements.
Analysis and Detail
- The question asks specifically for the method that removes the last element.
- Among the provided options, pop() is defined as the method that removes the last element from an array.
Verify and Summarize
- By analyzing the functions:
- unshift() does not apply since it deals with the beginning of the array.
- shift() also does not apply as it removes from the front.
- splice() is more versatile but does not specifically target the last element without additional arguments.
- pop() directly fulfills the requirement by removing the last element.
Final Answer
The correct method to remove the last element from an array in JavaScript is pop().
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