When I First Bumped Into Cookies
You know, I always heard about cookies. Websites yelling about them, browsers having settings for them. For the longest time, I just nodded along, thinking, “Yeah, cookies, whatever.” Never really got it, not really. Just another tech thing, right?

Then one day, I was trying to build this tiny little personal site. Just a hobby thing. And I wanted it to remember if a user preferred, say, a dark theme or a light theme. Seemed simple enough. But how? Every time they reloaded the page, boom, back to default. Drove me nuts.
Down the Rabbit Hole
So, I started digging. And “cookies” kept popping up. I thought, “Alright, universe, I get it. Time to face the music.” My first look at how you’re supposed to set a cookie with plain JavaScript, using … man, what a mess. It looked like some ancient incantation.
Just a string! You just slap stuff onto this one string. * = "theme=dark"
. Okay, simple enough. But then, wait, how do I make it last? How do I tell it which parts of my site it’s for? It wasn’t just one thing; it was a bunch of little pieces you had to string together yourself, like expires
and path
. What a headache for something so small!
I remember spending a whole evening just trying to get a cookie to stick around after I closed the browser. Reading stuff online, people talking about UTC dates for the expiration, and I’m like, “Can’t it just be ‘next week’?” Apparently not, not that easily anyway. It felt like I was wrestling with a grumpy old librarian who only spoke in riddles.
The “Aha!” Moment (Sort Of)
Finally, after a lot of trial and error, mostly error, I got it. I managed to set a cookie: username=MyOldDogFido; expires=...; path=/
. Something like that. And it worked! My silly little theme preference was actually remembered!
It was a small win, but man, it felt good. Like I’d unlocked some secret level of the internet. Suddenly, all those “accept cookies” banners made a tiny bit more sense. They weren’t just being annoying for fun; they were trying to do this kind of stuff. Well, this and a whole lot more, I guess.
Here’s what I basically did, after all that fumbling:

- Figured out the basic name-value pair thing:
myKey=myValue
. - Learned to tack on an
expires
date. Had to convert a date into the right string format. What a pain. - Added a
path=/
to make sure it applied to my whole site. - Then, to read it back, I had to split that string by semicolons and then find my specific cookie. More string wrestling!
So, Cookies, Huh?
It’s funny, right? These tiny text files. They run so much of the web, remembering who you are, what’s in your shopping cart, all that jazz. And here I was, just trying to remember a theme preference, and it felt like I was decoding ancient hieroglyphs.
It makes you think. I was building a simple website, a little portfolio for my photography, nothing fancy. And even for that, cookies came into play. I wasn’t trying to track anyone across the web or sell ads. I just wanted a button to remember if you liked light or dark mode. But the tool for that simple job is the same tool used for all that other big, complicated, sometimes kinda creepy stuff.
It’s like, back in the day, my grandpa had this one wrench. He used it for everything. Fixing the tractor, tightening a leaky pipe, probably even hammering a nail if he couldn’t find his hammer. Cookies feel a bit like that wrench. Super basic, can be used for a million things, but sometimes you wish you had a more specific tool, you know? But hey, I got my theme switcher working, so I can’t complain too much. At least until the next time I have to parse that string again. Ugh.