Solving day 1 of Advent of Code 2021 in JavaScript

Advent of Code is a website that releases a new programming puzzle every day between the 1st and the 25th of December.

0:00 Part 1
4:30 Part 2

Have fun!

[xmehdi_]

Great Solution using for-loop, just I note for incrementation of the variable increases you would omit if condition and just short it like this: count += current > previous;

[DavidWoodMusic]

I always look forward to you doing these.

[clairechristenson]

Could you do a quick tutorial on how you set up your Javascript environment or point me to the resource that you used? I want to code along but I've spent all day trying to just configure my IDE and do simple things like importing text from a file (which I assume will be used extensively in future days this month). Thanks! Loving your videos so far!

[sadeeshkumar]

Thank You so much for creating these videos. This is very helpful for beginners. Thanks a lot man

[zzz-mnyy]

nice, looking forward to other solutions as problems get harder

[lordkim]

Hey, u have cool videos. R u planning on ending AoC 2019, or recording any other year ?

Also continuing prev post: u can also write shorthand filter/map methods in this case

.filter(Boolean)
.map(Number);

[sarahbuhler]

Hey, great video. Do you use any extensions for Visual Studio Code? The command "node day01.js" dosn't work for me.
I tried some node.js extensions, but nothing helped yet.

[AlexanderHolsgrove]

Thanks for all of your videos. Have been following along to see how you approach these puzzles. Just waiting for your day 21 solution now. For my solution, I went for:

// Part 1
let previousValue = null;
const increases = values.reduce((total, value) => {
const ret = (previousValue && value > previousValue) ? 1 : 0;
previousValue = value;
return total + ret;
}, 0);

// Part 2
let previousTotal;
let increases2 = 0;
for(i = 0; i < (values.length - values.length%3); i++) {
const currentTotal = values[i] + values[i+1] + values[i+2];
if (i > 0 && currentTotal > previousTotal) {
increases2++;
}

previousTotal = currentTotal;
}

[ahmedgharbi]

Thank you for the video.. What is "fs" ?

[xShosTaK]

I keep getting 0 as my answer when I run the file, even though I matched the code to be exactly like yours. Weird. Trying to figure that out. Great video though thanks

[HighRollersLounge]

Hope you'll solve all of them like a year ago ;)