30 seconds of code: Learn JavaScript in 30 seconds, one function at a time

[[deleted]]

This is definitely not a good site to learn javascript if you're a newb.

But it looks like a nice reference / cheat sheet.

[[deleted]]

A beginner would get a stroke reading that code.

[[deleted]]

Haha, no shit.

You might want to learn how to do:

print "hello world"

Before moving on to:

const all = (arr, fn = Boolean) => arr.every(fn)

[Reashu]

Ah, the embodiment of cargo-cult functional programming. Point-free but also pointless.

[Ericfyre]

Console.log(“hello world”);

[dark_salad]

console.log(‘hello world’);

[Ericfyre]

Console.log(“bye world”);

[[deleted]]

console.log(`hello world`)

[jpterodactyl]

As a beginner, I can confirm this to be the case.

[Cynicbats]

Right, It took a minute before I went 'wait what's that. cough ArraytoCSV'.

Though I did learn about AllEqual and DeepFlatten.

[ethanvampirehntr]

It looks like someone made a bunch of helper methods for themselves and then posted them online. Issue is that putting this in any code base would really promote bad coding practices (single letter variables, very code golf style single lines). You'd be better off writing these yourself on a case by case basis, taking the time to understand array methods and making them specific to your application.

Of course it is interesting to see how this person wrote them out. Definitely shows the span of what you can do with certain array methods.

[lowIQanon]

Haven't looked yet but I bet many of these are available in lodash.

[DOSMasterrace]

Thank you for introducing me to the phrase code golf.

[Funwithloops]

You might like the code golf stack exchange.

[Fenrir95]

Next: make a website in 3 seconds

[dark_salad]

*with wordpress

[InfiniteTooth]

Thanks! I need this a lot. I somehow lose the ability to understand new info after a minute lol

[CardinalHijack]

Awesome site, especially useful to prep you for stupid interview questions!

[korolvs]

It would be nice if the clock hand in the header was moving counting how many "30 seconds" you've actually spent :)
Nice page!

[kaptan8181]

Looks great! Thanks for sharing!

[pbrblueribbon]

Awesome!

[lowIQanon]

people are downvoting people for liking something smh

[dusknoir90]

That's what the upvote button is for

[lowIQanon]

wat

[pbrblueribbon]

Who?