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.