I am using Promises and in the meanwhile i have a loading animation.
the problme is that my promise is resolved fast and the loader is quickly disappear.
So i want to launch a promise and if the promise is resolved before 3 sec wait the remaining time.
Example
export const operation = () => {
const a = new Date();
const myPromise = doAction().then(() => {
const b = new Date();
if((b - a) < 3000)
operationIsDone();
else
setTimeout(() => {operationIsDone();}, b - a)
});
}
Is there any npm or a better way doing it? Thanks in advance.
It is much easier to use a second promise that just runs the minimum waiting time. Then use Promise.all
to wait for both to finish.
That way, your script will always wait at least the default delay but also longer if yourOwnPromise
takes longer than that.
const wait = delay => new Promise(resolve => setTimeout(resolve, delay));
const doAction = () => wait(500); // TODO replace this with your own function
const yourOwnPromise = doAction();
yourOwnPromise.then(() => {
console.log('yourOwnPromise resolved now');
});
Promise.all([yourOwnPromise, wait(3000)]).then(() => {
console.log('both resolved now');
});
See Promise.all
for details.