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39 lines
1 KiB
Markdown
39 lines
1 KiB
Markdown
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---
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id: 14e0ce4b-b4b1-46fe-946a-c519550682ac
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title: JavaScript Promises
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---
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# Introduction
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A Promise[^1] is an asynchronous action that may complete at some point
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and produce a value. It is able to notify anyone who is interested when
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its value is available.
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``` javascript
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let fifteen = Promise.resolve(15);
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fifteen.then(value => console.log(`Got ${value}`))
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```
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# Parallel
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- [Executing Promises in Parallel
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(Promises.all)](20201111094957-executing_promises_in_parallel_promises_all)
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- [Promise.allSettled](20201116163327-promise_allsettled)
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# Errors
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- [Catching Promise Errors](20201111095100-catching_promise_errors)
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- [Finally](20201111095454-javascript_promises_finally)
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# Producing & Consuming
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Use [Async functions](20201026103714-javascript_async_functions) instead
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of this.
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- [Producing Promises](20201111095230-producing_promises)
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- [Consuming Promises](20201111095316-javascript_consuming_promises)
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# Footnotes
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[^1]: <https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise>
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