Created
September 22, 2019 06:57
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| console.log("Request data..."); | |
| // setTimeout(() => { | |
| // console.log("Preparing data..."); | |
| // const backendData = { | |
| // server: "aws", | |
| // port: 2000, | |
| // status: "working" | |
| // }; | |
| // setTimeout(() => { | |
| // backendData.modifed = true; | |
| // console.log("Data received", backendData); | |
| // }, 2000); | |
| // }, 2000); | |
| // const p = new Promise((resolve, reject) => { | |
| // setTimeout(() => { | |
| // console.log("Preparing data..."); | |
| // const backendData = { | |
| // server: "aws", | |
| // port: 2000, | |
| // status: "working" | |
| // }; | |
| // resolve(backendData); | |
| // }, 2000); | |
| // }); | |
| // p.then(data => { | |
| // return new Promise((resolve, reject) => { | |
| // setTimeout(() => { | |
| // data.modified = true; | |
| // resolve(data); | |
| // }, 2000); | |
| // }); | |
| // }) | |
| // .then(clientData => { | |
| // clientData.fromPromise = true; | |
| // return clientData; | |
| // }) | |
| // .then(data => { | |
| // console.log("Modified", data); | |
| // }) | |
| // .catch(err => console.error("Error", err)) | |
| // .finally(() => console.log("finally")); | |
| const sleep = ms => { | |
| return new Promise(resolve => { | |
| setTimeout(() => resolve(), ms); | |
| }); | |
| }; | |
| // sleep(2000).then(() => console.log("After 2 sec")); | |
| // sleep(3000).then(() => console.log("After 3 sec")); | |
| Promise.all([sleep(2000), sleep(5000)]).then(() => { | |
| console.log("All promises"); | |
| }); | |
| Promise.race([sleep(2000), sleep(5000)]).then(() => { | |
| console.log("Race promises"); | |
| }); |
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