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Components & JSX
State & Hooks
Effects & External Systems
Forms & Composition
Concurrent React
Race-condition cancellation
Learn Race-condition cancellation in React with a dedicated explanation, a concept-specific example, a production caution, and a mastery check.
12 min read
•
Intermediate
react-023.tsx
tsx
import { useEffect,useState } from "react";
export default function Search({q}){ const [data,setData]=useState([]); useEffect(()=>{ const c=new AbortController(); fetch(`/api/search?q=${encodeURIComponent(q)}`,{signal:c.signal}).then(r=>r.json()).then(setData).catch(()=>{}); return()=>c.abort(); },[q]); return <p>{data.length} results</p>; }What to watch
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