Currently, I am attempting to iterate through all the pages of an API response that contains a URL linking to the next page:
const apiURL = 'https://wger.de/api/v2/exercise/?format=json&page=29';
async function retrieveExercises() {
const fetchResponse = await fetch(apiURL);
const data = await fetchResponse.json();
data.results.forEach(item => console.log(item.name));
}
retrieveExercises();
What approach would you take to achieve this?
To retrieve exercise data from an API, you can implement a solution using a while loop:
async function getExercises () {
let url = 'https://wger.de/api/v2/exercise/?format=json'
while (url) {
const res = await fetch(url)
const data = await res.json()
for (const item of data.results) {
console.log(item.name)
}
url = data.next
}
}
// It's important to handle errors as well, to prevent unhandled rejections.
// Ensure this code is executed within an async function to catch any errors that may occur.
getExercises().catch(e => console.error('Failed to get exercises', e))
In addition, I found out that specifying a limit parameter works efficiently. By setting a higher limit like
https://wger.de/api/v2/exercise/?format=json&limit=1000To solve this problem, you can utilize recursion.
let currentPage = 1;
const limit = 5;
const apiURL = 'https://wger.de/api/v2/exercise?format=json';
const fetchExerciseData = async () => {
const response = await fetch(`${apiURL}&page=${currentPage}`);
const exerciseData = await response.json();
// If there are results and the current page is within the limit
if (exerciseData.results.length && currentPage <= limit) {
currentPage++;
exerciseData.results.forEach(item => console.log(item.name));
fetchExerciseData();
} else {
return;
}
}
fetchExerciseData();
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