Getting the min or max value from an array of numbers in javascript

Turns out this is simple. Well, it was simple anyway, but it's also quite concise.

I'll provide my code examples in javascript.

Let's suppose we have an array of number...

var myNumbers = [100, 50, 200];

We can use swanky destructuring assignment, which I know more commonly as the spread operator.

var myNumbers = [100, 50, 200];
var myMinNumber = Math.min(...myNumbers);
var myMaxNumber = Math.max(...myNumbers);

Short and sweet.

Comments

[Andy Potts]

I think there's a typo, "nums" should be "myNumbers" :)

E.g.

var myNumbers = [100, 50, 200];
var myMinNumber = Math.min(...myNumbers);
var myMaxNumber = Math.max(...myNumbers);

[Nick Raphael]

Thank you!!! Fixed.

[Jared Mosley]

In case you want to be able to switch how you compare the items, you can also do something like this:

const compare = (a, b) => a > b;
const min = arr.reduce((acc, val) => compare(acc,val) ? val : acc);
const max = arr.reduce((acc, val) => compare(acc,val) ? acc : val);

[Keff]

Nice snippet, I always forget about min and max :)

[Damian Cipolat]

Wow nice!

[Shkarsardar]

excellent