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by horsawlarway
1650 days ago
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JS uses an event-loop (which is really just a variation of a message/event queue that we've been using for GUI based applications for decades now). If you understand this, asynchronous code in JS is pretty easy to understand. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Even... You can go from nothing to mostly full-fledged promises in about 200 lines of code: ex - https://www.promisejs.org/implementing/ async/await is pure sugar on top of promises (it's literally just wrapping the rest of the function in a .then() for you, and coercing the return value of your function to always be a promise) |
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