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JavaScriptIntermediate#browser#security
JavaScriptIntermediate#browser#async
How does fetch differ from XMLHttpRequest?
fetch is promise based, streams responses and works with async/await, but it only rejects on network failure — you must check response.ok yourself. XHR is callback based and more verbose.
Example
const res = await fetch('/api/x');
if (!res.ok) throw new Error(res.status);
const data = await res.json();