javascript - 并行调用异步/等待功能(Call async/await functions in parallel)

Question

As far as I understand, in ES7/ES2016 putting multiple await 's in code will work similar to chaining .then() with promises, meaning that they will execute one after the other rather than in parallerl.(据我了解，在ES7 / ES2016中，在代码中放置多个await的工作方式类似于将带有.then()的承诺链接在一起，这意味着它们将一个接一个地执行而不是并行执行。)

So, for example, we have this code:(因此，例如，我们有以下代码：) await someCall(); await anotherCall(); Do I understand it correctly that anotherCall() will be called only when someCall() is completed?(我是否正确理解只有在someCall()完成后才会调用anotherCall() ？) What is the most elegant way of calling them in parallel?(并行调用它们的最优雅方式是什么？) I want to use it in Node, so maybe there's a solution with async library?(我想在Node中使用它，所以也许有一个异步库解决方案？) EDIT: I'm not satisfied with the solution provided in this question: Slowdown due to non-parallel awaiting of promises in async generators , because it uses generators and I'm asking about a more general use case.(编辑：我不满意此问题提供的解决方案： 减速是由于异步生成器中非并行等待promise ，因为它使用生成器，并且我询问的是更通用的用例。)   ask by Victor Marchuk translate from so

Answer 1

You can await on Promise.all() :(您可以在Promise.all()上等待：)

await Promise.all([someCall(), anotherCall()]); To store the results:(要存储结果：) let [someResult, anotherResult] = await Promise.all([someCall(), anotherCall()]);