The best way to get the last element of an array:

#javascript #webdev #programming #tutorial

EDIT: Safari does not support it ,_,
But use it in Node js or with a bundler!

So some people would say:

array[array.length-1]

But I'd say:

array.at(-1)

The Performance of both is the same.

MDN article: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at

Top comments (2)

JoelBonetR 🥇 • Aug 12 '22 • Edited

Yes it works in Safari, check the browser compatibility

Array.at has been "recently" introduced into the core API of JavaScript, the purpose is to get better readability and to facilitate getting Array positions starting from the end:

const colors = ['red', 'green', 'blue'];

colors[colors.length-2] // green

colors.at(-2) // green

However if you're getting specific positions forwards is not that fancy:

const colors = ['red', 'green', 'blue'];

colors[1] // green

colors.at(1) // green

// or

for (let i = 0; i < colors.length; i++) {
   console.log( colors[i] );
   console.log( colors.at(i) );
}