JAVASCRIPT Tutorial

pop() in JS

What is 'pop()'?

'pop()' is a built-in method in JavaScript that performs two essential actions on an array:

  • Modifies the original array: It removes the last element from the array, effectively shortening its length by 1.
  • Returns the removed element: It returns the value of the element that was removed.

Key Concepts:

  • Modifies Original Array: 'pop()' does not return a new array; instead, it changes the existing array.
  • Returns Removed Element: The removed element is returned as the result of the 'pop()' operation.

Example (Remove Last Element):

// myArray is an array containing elements
const lastElement = myArray.pop();

// lastElement now contains the value of the removed element
console.log(lastElement); // Output: (value of removed element)
console.log(myArray.length); // Output: (myArray's new length, reduced by 1)

Accessibility and Ease of Use:

  • Clear and Concise: The guide is written in plain English to make it easy to understand for English-speaking learners.
  • Step-by-Step Instructions: The practical steps involved in using 'pop()' are outlined in a numbered list, providing a clear flow of information.
  • Simple Example: A simple JavaScript example demonstrates the core functionality of 'pop()' by removing the last element from an array.