javascript return promise
function doSomething() {
return new Promise((resolve, reject) => {
console.log("It is done.");
// Succeed half of the time.
if (Math.random() > .5) {
resolve("SUCCESS")
} else {
reject("FAILURE")
}
})
}
const promise = doSomething();
promise.then(successCallback, failureCallback);new promise function
const myPromise = new Promise((resolve, reject) => {
setTimeout(() => {
resolve('foo');
}, 300);
});
myPromise
.then(handleResolvedA, handleRejectedA)
.then(handleResolvedB, handleRejectedB)
.then(handleResolvedC, handleRejectedC);Copyright © 2021 Codeinu
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