Nick Raphael

Posted on Mar 27, 2020 • Edited on Mar 29, 2020

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

#javascript #typescript

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.

Top comments (6)

Andy Potts • Mar 27 '20

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 • Mar 29 '20

Thank you!!! Fixed.

Jared Mosley • Mar 27 '20 • Edited

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 • Mar 27 '20

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

Damian Cipolat • Mar 27 '20

Wow nice!

Shkarsardar • Mar 27 '20

excellent

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

Top comments (6)

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