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JavaScriptIntermediate#async#performance
JavaScriptIntermediate#async
How does async/await work?
async marks a function as returning a promise; await pauses that function until the awaited promise settles, without blocking the main thread. Errors are handled with try/catch.
Example
async function load() {
try {
const res = await fetch('/api/users');
return await res.json();
} catch (e) {
console.error('failed', e);
}
}