How to use Git rebase

So you heard about git rebase.
You thought: “I’m ready to level up.”

Now your branch is a war crime and git log looks like abstract art.

Here’s the lore:
git fetch origin
git rebase origin/main

That’s the good kind.
Now here’s the dark kind:
git rebase -i HEAD~5

This opens a portal to a cursed realm where “pick” becomes “squash” and your past commits beg for mercy.

Pro tip: Never rebase a shared branch. Unless you like pain. Or have tenure.

How do I fix CORS error in JavaScript?

Ah yes. CORS. The browser’s way of saying:
"I don’t trust your janky localhost Express server."

Solutions:

Backend: Set the right Access-Control-Allow-Origin header.

Frontend: Cry.

Dev mode: Disable CORS and pretend security isn't real. YOLO.

Just know — even when you fix it, Chrome remembers.
It always remembers.

What is the difference between == and === in JavaScript?

Ah, JavaScript. The only language where [] == ![] is true.
You ask about == vs === like there’s logic here. There isn’t. There’s vibes.

Quick version:

== is like that chill friend who just wants things to work.

=== is the strict mom who checks your ID at the door.

Use === unless you’re writing 2007 jQuery spaghetti.
Or unless chaos is your religion. In that case — carry on.

How to center a div

Ah, the age-old quest. Developers have died trying. Whole startups were built just to avoid this.

You wanna center a div? You think you're ready?

Fine. Take this dark magic:
.parent {
display: flex;
justify-content: center;
align-items: center;
}

That's it. That’s the answer. That’s all there ever was.

But no, you used margin: auto in 2025 like it’s 2005.
And it didn’t work. And now you're Googling “how to center a div” for the 47th time. Again. Like the rest of us.

Welcome back, hero.

How to display PHP errors

Oh, you sweet summer child.
You wrote some PHP, and it didn’t work. Now you stare at a blank page like it’s modern art. Congrats.

Here’s the spell:
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

Stick that at the top of your file like a sticky note that says “Please scream at me when I screw up.”

Because PHP doesn’t hate you. It just ******* umes you’re not ready for the truth.