4 ms·

Is this is what you are looking for? https://vanjs.org/vanui#await https://vanjs.org/vanui#await

• seanlaff 3y ago
  Hmm, maybe! Is that the idiomatic way to do async? I was thinking something along the lines of this, which react devs will have written a variation of plenty of times :) import { useEffect, useState } from "react"; const GithubUser = ({ login, avatar_url, html_url }) => ( <div> <img src={avatar_url} style={{width:40, height:40}}/> <a href={html_url}>{login}</a> </div> ); export function App() { const [stargazerResp, setStargazerResp] = useState([]); const [repo, setRepo] = useState("vanjs-org/van"); useEffect(() => { fetch(`https://api.github.com/repos/${repo}/stargazers?per_page=5`) .then((r) => r.json()) .then((r) => Array.isArray(r) ? setStargazerResp(r) : setStargazerResp([])); }, [repo]); return ( <div className="App"> <input value={repo} onChange={(e) => setRepo(e.target.value)} /> <ul> {stargazerResp.map((s) => ( <li key={s.login}> <GithubUser login={s.login} avatar_url={s.avatar_url} html_url={s.html_url} /> </li> ))} </ul> </div> ); }
  • taoxin 3y ago
    You can do with VanJS in this way as well. `set...` functions in React map to `....val = ...` in VanJS (which I think is more intuitive). But the `Await` component is a good abstraction so that you can specify what to show when the resources are being fetched and what to show when there are errors while fetching the resources.
    • seanlaff 3y ago
      Would we expect the list to re-render once the fetch finishes? This may just be years of react poisoning my brain const Stargazers = () => { const stargazers = van.state([]); fetch(`https://api.github.com/repos/vanjs-org/van/stargazers?per_page=5`) .then((r) => r.json()) .then((r) => stargazers.val = r); return ul( stargazers.val.map((s) => li(s.login)) ); };
      • taoxin 3y ago
        Yes. This is how VanJS works. Code with VanJS is often more concise compared to equivalent code with React.
        • seanlaff 3y ago
          Ah ok! Very cool. Maybe I'm still missing a tiny piece of syntax? I don't see any output when I run that code in the fiddle https://jsfiddle.net/397fb684/ https://jsfiddle.net/397fb684/
          • taoxin 3y ago
            Ah.. you need a binding function to wrap the state-derived content into a reactive UI element, see: https://vanjs.org/tutorial#state-derived-child https://vanjs.org/tutorial#state-derived-child. I made the change in your code to make it work: https://jsfiddle.net/rkfmpx06/1/ https://jsfiddle.net/rkfmpx06/1/
            • seanlaff 3y ago
              Oh! I understand, thanks for walking through that. Yes very terse compared to the equivalent react :)