new Promise((resolve,reject) => {
})
const responses = []
for (const url of urls) {
const response = fetch(url);
responses.push(response)
}
await Promise.all(responses)
new Promise((resolve,reject) => {
resolve(result)
})
async onLoad() {
let totalPosts = 0;
async function getPosts(userId) {
const users = [{
id: 1, posts: 5 }, {
id: 2, posts: 3 }];
await Math.random() * 1000;
return users.find((user) => user.id === userId).posts;
}
async function addPosts(userId) {
const posts = await getPosts(userId);
totalPosts += posts;
}
await Promise.all([addPosts(1), addPosts(2)]);
console.log('Post count:', totalPosts);
}
const result1 = await asyncPromise1();
const result2 = await asyncPromise2(result1);
const result3 = await asyncPromise3(result2);
const result4 = await asyncPromise4(result3);
console.log(result4);
async () => {
return getUser(userId);
}
async () => {
try {
const user = await getUser(userId);
return user;
} catch (error) {
}
}
Promise.reject(new Error('An error occurred'));
function callback(err, data) {
if (err) {
console.log(err);
return;
}
console.log(data);
}
const file = await fs.readFile(path);
async function getValue() {
return someValue;
}
await getValue();
myPromise()
.then(() => {
})
.catch(() => {
});
const user = await getUserFromDB();
if (user) {
}