44 lines
1.0 KiB
TypeScript
44 lines
1.0 KiB
TypeScript
const myPromise = new Promise<number>((resolve, reject) => {
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reject('unknown error');
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setTimeout(() => {
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resolve(42);
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}, 1000);
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});
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// myPromise
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// .then((result) => {
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// console.log(result);
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// return result + 1;
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// })
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// .then((data) => console.log('new data: ', data))
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// .catch((error) => console.error('Fehler: ', error))
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// .finally(() => console.log('Promise abgeschlossen'));
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async function fetchData() {
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try {
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const result = await myPromise;
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console.log('Daten empfangen: ', result);
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} catch (error) {
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console.log('Fehler: ', error);
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}
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}
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fetchData();
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const promise1 = new Promise((resolve) => setTimeout(() => resolve('A'), 1000));
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const promise2 = new Promise((resolve) => setTimeout(() => resolve('B'), 2000));
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async function fetchAll() {
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const results = await Promise.all([promise1, promise2]);
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console.log(results);
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}
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fetchAll();
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async function fetchFirst() {
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const result = await Promise.race([promise1, promise2]);
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console.log('Fetch First: ', result);
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}
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fetchFirst();
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