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Nick Raphael
Nick Raphael

Posted on • Edited on

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];
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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);
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Short and sweet.

Top comments (6)

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andypotts profile image
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);
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nickraphael profile image
Nick Raphael •

Thank you!!! Fixed.

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superturkey650 profile image
Jared Mosley • • 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);
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nombrekeff profile image
Keff •

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

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damxipo profile image
Damian Cipolat •

Wow nice!

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shkarsardar profile image
Shkarsardar •

excellent

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