js create a new promise code example
Example 1: js create a promise
let promise = new Promise((resolve , reject) => {
fetch("https://myAPI")
.then((res) => {
resolve(res);
})
.catch((err) => {
reject(err);
});
});
Example 2: js return a promise
function myAsyncFunction(url) {
return new Promise((resolve, reject) => {
const xhr = new XMLHttpRequest();
xhr.open("GET", url);
xhr.onload = () => resolve(xhr.responseText);
xhr.onerror = () => reject(xhr.statusText);
xhr.send();
});
}
Example 3: making promises in js
getData()
.then(data => console.log(data))
.catch(error => console.log(error));