Roast My Code

			This function orders a pizza, opens the empty box immediately, and returns “dinner.”

- **It returns `null` before the fetch completes.** Updating `data` later won’t retroactively fix the returned value. JavaScript has promises, not time travel.
- **No HTTP status check.** `fetch` doesn’t reject on 404 or 500. Your server can be on fire and you’ll still ask it for JSON.
- **No rejection handling.** Network failures and invalid JSON become unhandled promise rejections—the console’s little cry for help.
- **Raw `id` concatenation.** A `/`, `?`, or `#` can turn your user lookup into URL improv.

Give callers something they can actually await:

```js
async function getData(id) {
  const r = await fetch('/api/user/' + encodeURIComponent(id));
  if (!r.ok) throw new Error(`HTTP ${r.status}`);
  return r.json();
}
```

Callers should catch errors. Emotional and network-related.
		

			Ah, the classic "I'll just wait here for the async to finish" — except you didn't wait. You *sprinted*. This function returns `null` faster than fetch can even say "hello, network." It's like ordering a pizza, immediately opening your front door, and declaring dinner cancelled because nobody's there.

Highlights:

- **`return data`** fires before `.then()` ever runs. Every single time. Your function has one job and it's confidently returning `null` with a straight face.
- **`var`** in 2024 — you're one `document.write` away from a museum exhibit.
- **No `.catch()`** — if the API 500s, that rejection floats off into the void like a balloon at a sad birthday.
- **`r.json()` without checking `r.ok`** — enjoy parsing an HTML error page as JSON.

The fix is literally `async function` + `await`. Two words. You were *so close*.
		

			Congratulations, you’ve written the JavaScript equivalent of ordering a pizza and immediately eating the empty cardboard box. 

Because `fetch` is asynchronous, `return data;` executes instantly. This function will **always** return `null`. It doesn't wait for your `.then()` callback to finish, no matter how nicely you ask. 

Also, `var`? Did you code this on a typewriter in 2013? 

Where is your `.catch()`? If the API fails, your code will just sit there in silent, blissful ignorance while the rest of the application burns to the ground. 

Using string concatenation (`+ id`) instead of template literals is just the depressing cherry on top of this broken sundae. 

Please, slap an `async/await` on this tragedy before it hurts someone.
		

			Ah, the classic "return before the fetch finishes." `fetch` is asynchronous, so this returns `null` **every single time** — the `data = d` assignment happens later, inside a closure that vanishes into the void. It's a thank-you note mailed to a black hole. Honestly, initializing `data = null` was prophetic.

More crimes:

- **`var`** — nostalgic! Do you also miss Internet Explorer?
- **No `r.ok` check** — `fetch` doesn't reject on HTTP errors, so a 404 gets parsed as "data" with total confidence.
- **No `.catch()`** — errors are handled via prayer.
- **Raw `id` concatenated into the URL** — `encodeURIComponent` sends its regards.

The fix: make it `async`, `await` the fetch, return the actual result. Right now you've built an extremely reliable null generator. At least it's consistent.
		

			This function is performance art: it promises data, delivers null, and ghosted you. `fetch` is async — you set `data = null`, fire the request, return immediately, then maybe assign `d` later in a `then()` nobody's waiting for. Always null. Every. Single. Time.

`var` in the current year? URL built with `+` like it's PHP 4? No `r.ok` check, no `catch` — 404s, network fails, and JSON explosions all silently become null. You've written a function that's wrong on every axis except "it compiles." Chef's kiss.
		

			This function is a masterclass in delivering disappointment. You declare `data = null`, fire off a fetch, and immediately return `data`—which is still `null` because the promise hasn’t settled. You’ve built a time machine that only travels to the past of null. The `data = d` inside `.then` is a promise whisper that will never be heard, because the function finished talking before the network even said hello. You’re using `var` in 2025, so at least you’re consistent with hoisting variables that stay empty. No `.catch` means any error will silently vanish into the void, leaving you with a permanent `null` and a broken heart. And concatenating `id` straight into the URL? Bold move—hope nobody’s user ID is `../../etc/passwd`. This code is the JavaScript equivalent of a waiter who takes your order, walks into the kitchen, and immediately returns to tell you the meal is ready, holding an empty plate.