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Web Development vocabulary · JavaScript, Frameworks and Tooling

Promise

Meaning in web development, with examples

/ˈprɑːmɪs/nounCommon term

In web development, promise means: A JavaScript object that stands for a result that is not ready yet, such as data from a server, and that later succeeds or fails.

In Turkish: promise, söz

How it is used

A promise is first pending, then fulfilled (resolved) or rejected. Developers handle it with .then() and .catch() or with async/await, and say that a function 'returns a promise'.

Example sentences

  1. fetch() returns a promise, so you need await before you can read the data.

  2. One of the promises was rejected, so Promise.all failed.

Common collocations

  • return a promise
  • resolve a promise
  • rejected promise
  • unhandled promise rejection
  • asynchronousDescribes code that starts a task, such as loading data, and goes on running other code instead of waiting for that task to finish.
  • fetchTo request and receive data from a server or API, for example the latest messages or a list of products, often while the page is already open.
  • JavaScriptThe programming language that runs in every web browser and makes pages interactive; with Node.js it also runs on servers.

This word in other fields

The same English word can have a different meaning in another field:

More terms: JavaScript, Frameworks and Tooling

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