Tag: promises — Code Glossary

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Promise.allSettled / Promise.any / Promise.race 1

Fetch API 1

async/await 122async / await in JavaScript 102Promises & Futures 88 Unhandled Promise Rejection 84 Fetch API 75 Async Error Handling (try/catch + Promise) 67 Promise.allSettled / Promise.any / Promise.race 64

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async / await in JavaScript ES2017 🧠 5

async functions always return a Promise; await pauses execution inside an async function until a Promise settles — giving asynchronous code the readability of synchronous code without blocking the event loop.

6mo ago JavaScript intermediate

Fetch API ES2015 🧠 2

The browser-native Promise-based API for making HTTP requests — replacing XMLHttpRequest with a cleaner interface supporting streaming, CORS, and request/response objects.

6mo ago JavaScript beginner

Promise.allSettled / Promise.any / Promise.race ES2020

Three Promise combinators for handling multiple async operations — allSettled() waits for all to complete regardless of failure, any() resolves with the first success, race() resolves or rejects with the first to settle.

6mo ago JavaScript intermediate

Promises & Futures PHP 7.0+ 🧠 4

Abstractions representing the eventual result of an async operation — a Promise or Future is a placeholder for a value not yet available, enabling non-blocking code composition without nested callbacks.

6mo ago Concurrency intermediate

Async Error Handling (try/catch + Promise) ES2017 🧠 2

Errors in async functions require try/catch or .catch() — a rejected Promise that's not caught becomes an unhandledRejection that crashes Node or shows a console warning in browsers.

6mo ago JavaScript intermediate

Unhandled Promise Rejection ES2015

An unhandled Promise rejection occurs when a rejected Promise has no .catch() or try/catch handler — Node.js 15+ terminates the process on unhandled rejection by default.

6mo ago JavaScript intermediate

async/await ES2017 🧠 2

Syntactic sugar over Promises — async functions always return a Promise; await pauses execution until the awaited Promise settles.

6mo ago JavaScript intermediate