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Start your free trialJoseph Michelini
Python Development Techdegree Graduate 18,692 PointsWhy doesn't the fetchData function need to be an async/await function?
I thought because there is a fetch()
request inside the function, and because it is otherwise written as a synchronous event (regular function), that it had to be labeled as an async
function with await
after return
and before fetch()
.
Here's the bit of code I'm referring to, specifically the first function:
function fetchData(url) {
return fetch(url).then((res) => res.json());
}
fetchData("https://dog.ceo/api/breeds/image/random").then((data) =>
generateImage(data.message)
);
fetchData("https://dog.ceo/api/breeds/list").then((data) =>
generateList(data.message)
);
Thanks!
1 Answer
Steven Parker
231,172 PointsThe code here is using "then" to make sure the operations occur at the right time. Using "then" is similar to using "await" except that "then" fires a separate callback function after the promise resolves, but "await" pauses the current function until the promise resolves.
Joseph Michelini
Python Development Techdegree Graduate 18,692 PointsJoseph Michelini
Python Development Techdegree Graduate 18,692 PointsThank you Steven!
Tashan Duncan
Front End Web Development Techdegree Graduate 17,799 PointsTashan Duncan
Front End Web Development Techdegree Graduate 17,799 PointsSteven, you are a legend! Thank you for everything you do here. I think I can speak for everyone when I say it helps out a lot.
Steven Parker
231,172 PointsSteven Parker
231,172 PointsThanks for the kind words, and happy holidays!