Asked by: Mui Haustovich
asked in category: General Last Updated: 8th April, 2020

When should I use async await?

await is used for calling an async function and wait for it to resolve or reject . await blocks the execution of the code within the async function in which it is located. If the output of function2 is dependent on output of function1 then I use await .

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Similarly, it is asked, when should I use async?

async / await may be used when you have asynchronous operations. Many operations are naturally asynchronous (such as I/O); I recommend async for all of those. Other operations are naturally synchronous (such as computation); I recommend using synchronous methods for those. You can use Task.

One may also ask, what is the difference between async and await? The most important difference between async/await and generators is that generators are natively supported all the way back to Node. js 4. x, whereas async/await requires Node. Another major difference is that co is a userland npm module, whereas async/await is a core part of the language.

Beside above, what is the point of async await?

Async/await allows to make complicated asynchronous code look as simple as synchronous one. It makes writing asynchronous code enormously easier. As you noted in your own question, it looks as if you were writing the synchronous variant - but it's actually asynchronous.

Why we use async and await in node JS?

With Node v8, the async/await feature was officially rolled out by the Node to deal with Promises and function chaining. The functions need not to be chained one after another, simply await the function that returns the Promise. But the function async needs to be declared before awaiting a function returning a Promise.

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