promise.all
时间: 2023-10-26 17:39:18 浏览: 38
Promise.all is a method in JavaScript that allows you to execute multiple promises simultaneously and wait for them all to complete before continuing with the next task. It takes an array of promises as input and returns a single promise that resolves when all the input promises have resolved. If any of the input promises reject, then the returned promise will also reject with the same reason.
This is useful when you need to perform multiple asynchronous tasks in parallel and wait for all of them to complete before taking further action. For example, if you need to fetch data from multiple APIs and then process the results together, you can use Promise.all to ensure that all the API requests have completed before proceeding with the data processing.
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