what is promise.all() code example
Example 1: 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);
});
Example 2: javascript promise.all
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];
}