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JS, method behind the madness.

Daniel Dennis on September 08, 2020

Hi There, Welcome to my first Post ☄ It all started with this meme A friend of mine called me out as a now lover of JS. To be honest, ...
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pentacular profile image
pentacular •

I think your example code is a bit off

 const array = [6,-2,2,-7];
        array.sort((a,b)=>{
        a-b;
    });
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The arrow function you've supplied here always returns undefined.

I think you intended to write this instead:

  const array = [6,-2,2,-7];
  array.sort((a, b) => a - b);
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The moral of this story is to always test your examples. :)

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stefanovualto profile image
stefanovualto •

Same with that one ;) (missing the return):

const array = [6,-2,2,-7];
        array.sort(function(a,b){
        a-b;
    });

to work it should be:

const array = [6,-2,2,-7];
        array.sort(function(a,b){
        return a-b;
    });
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katungi profile image
Daniel Dennis •

Haha, Oh my God. I completely missed that. Thanks for the heads up

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alannato profile image
AlanNato •

Before the world ends.
I hope I'll write a Hello 👋 World in Js.

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katungi profile image
Daniel Dennis •

You really should, pretty neat language when you learn it.

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anarchy40 profile image
Anarchy •

Said the C #eron...

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Galuh Utama •

Ah JavaScript. A jungle of landmines. There’s even a pitfall when it’s used for sorting numbers.

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Billy Okeyo •

Some good insights on that. I love your conclusion

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katungi profile image
Daniel Dennis •

Thank you So much for the feedback

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Saber Hosney •

Are you sure microsoft didn't "sponsor" this article to increase awareness of Typescript
〜(￣▽￣〜)

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katungi profile image
Daniel Dennis •

Yikes, They skipped Florin Pop and came to me for a promotional Blog.

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TILLERN • • Edited

Javascript is just awesome

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agiesey profile image
AGiesey •

Thanks for the article! JS has some weird gotchyas and it's nice to be reminded of specific examples.

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katungi profile image
Daniel Dennis •

You are welcome ! I hope you learned a thing or 2

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katungi profile image
Daniel Dennis •

Thank you Mary Anna. We love JS regardless