javascript promise all
var p1 = Promise.resolve(3);
var p2 = 1337;
var p3 = new Promise((resolve, reject) => {
setTimeout(resolve, 100, "foo");
});
Promise.all([p1, p2, p3]).then(values => {
console.log(values); // [3, 1337, "foo"]
});
javascript promise all
var p1 = Promise.resolve(3);
var p2 = 1337;
var p3 = new Promise((resolve, reject) => {
setTimeout(resolve, 100, "foo");
});
Promise.all([p1, p2, p3]).then(values => {
console.log(values); // [3, 1337, "foo"]
});
javascript promise.all
try {
const [res1, res2, res3] = await Promise.all([
Promise1,
Promise2,
Promise3,
]);
} catch (err) {
console.error(err);
}
promise all
Promise.all([Promise1, Promise2, Promise3])
.then(result) => {
console.log(result)
})
.catch(error => console.log(`Error in promises ${error}`))
Promise.all
const promise1 = Promise.resolve(3);
const promise2 = 42;
const promise3 = new Promise(function(resolve, reject) {
setTimeout(resolve, 100, 'foo');
});
Promise.all([promise1, promise2, promise3]).then(function(values) {
console.log(values);
});
// expected output: Array [3, 42, "foo"]
javascript promise.all
// PARALLEL PROMISES
async function fetchMoviesAndCategories() {
const [moviesResponse, categoriesResponse] = await Promise.all([
fetch('/movies'),
fetch('/categories')
]);
const movies = await moviesResponse.json();
const categories = await categoriesResponse.json();
return [movies, categories];
}
promise.all
const durations = [1000, 2000, 3000]
promises = durations.map((duration) => {
return timeOut(duration).catch(e => e) // Handling the error for each promise.
})
Promise.all(promises)
.then(response => console.log(response)) // ["Completed in 1000", "Rejected in 2000", "Completed in 3000"]
.catch(error => console.log(`Error in executing ${error}`))
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