what is promise in node js 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: javascript promises
var promise = new Promise(function(resolve, reject) {
if () {
resolve("Stuff worked!");
}
else {
reject(Error("It broke"));
}
});
promise.then(
function(result) { },
function(error) { }
);
Example 3: what is promise in javascript
Promises make async javascript easier as they are easy to use and write than callbacks. Basically , promise is just an object , that gives us either success of async opertion or failue of async operations