JavaScript: Get the last element from a given array

JavaScript fundamental (ES6 Syntax): Exercise-181 with Solution

Write a JavaScript program to get the last element from a given array.

• Check if arr is truthy and has a length property.
• Use Array.prototype.length - 1 to compute the index of the last element of the given array and return it, otherwise return undefined.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const last = arr => arr[arr.length - 1];
console.log(last([1, 2, 3]));
console.log(last([1, 2, 3, 4, 5, 7]));

Sample Output:

3
7

Pictorial Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-181-1 by w3resource (@w3resource) on CodePen.

Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript program to create a new object from the specified object, where all the keys are in lowercase.
Next: Write a JavaScript program to join all elements of an array into a string and returns this string.