Async/Await

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async/await are special syntax to work with promises in a more comfortable fashion.
The word â€œasyncâ€ before a function means one simple thing: a function always returns a promise. Other values are wrapped in a resolved promise automatically.
The keyword await makes JavaScript wait until that promise settles and returns its result.

await only works inside an async function. If we try to use await in a non-async function, there would be a syntax error:
Show example of converting the chapter Promises chaining and rewrite it using async/await:
If a promise resolves normally, then await promise returns the result. But in the case of a rejection, it throws the error, just as if there were a throw statement at that line. So handle errors with try..catch
When we use async/await, we rarely need .then, because await handles the waiting for us. And we can use a regular try..catch instead of .catch. Thatâ€™s usually (but not always) more convenient.
But at the top level of the code, when weâ€™re outside any async function, weâ€™re syntactically unable to use await, so itâ€™s a normal practice to add .then/catch to handle the final result or falling-through error, like in the line (*) of the example above.