Basic syntax understanding is essential for writing React applications.
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01
Understand the problem
jsxsyntaxtranspilationreact basics
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02
Attempt it yourself
Sketch your approach before reading the solution — that's what interviews test.
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03
Study the solution
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Read the code
JSX with expressions and attributes
export default function App() {
const name = "Ada";
const items = ["React", "JSX", "Babel"];
const active = true;
return (
<div className="card" style={{ padding: 24, fontFamily: "system-ui" }}>
<h1>Hi {name}!</h1>
<p>{active ? "Online" : "Offline"}</p>
<ul>
{items.map((it) => (
<li key={it}>{it}</li>
))}
</ul>
</div>
);
}05
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