Why return Doesn’t Work in setTimeout: The JavaScript Async Model Explained

Title: Why return Doesn’t Work in setTimeout: The JavaScript Async Model Explained

URL Source: https://medium.com/@akanksha.mohanty.sg/why-return-doesnt-work-in-settimeout-the-javascript-async-model-explained-080c26b56639?source=rss------javascript-5

Published Time: 2026-04-14T17:03:59Z

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# Why return Doesn’t Work in setTimeout: The JavaScript Async Model Explained | by Akanksha Mohanty | Apr, 2026 | Medium

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# Why `return` Doesn’t Work in `setTimeout`: The JavaScript Async Model Explained

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(And What You Should Do Instead)

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The `setTimeout` Trap That Confuses Every JavaScript Developer

If you’ve ever written JavaScript like this:

function asyncFn(msg) {

setTimeout(() => {

return `Subscribe to ${msg}`;

}, 1000);

}

const result = asyncFn("YouTube");

console.log(result);
…and stared in disbelief at:

undefined
You’re not alone.

This confusion is **one of the most common JavaScript pitfalls**, especially for de