Created
August 10, 2024 14:44
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| function slow(id, cb) { | |
| setTimeout(function () { | |
| cb(null, id) | |
| }, Math.random() * 3000) | |
| } | |
| let promises = [] | |
| for (let i = 0; i < 3; i++) { | |
| const prom = new Promise((resolve, reject) => { | |
| slow(i, function (err, res) { | |
| if (err) reject(err) | |
| else resolve(res) | |
| }) | |
| promises.push(prom) | |
| }) | |
| } | |
| Promise.all(promises) | |
| .then((res) => { | |
| console.log(res) | |
| }) | |
| .catch((err) => { | |
| console.error(err) | |
| }) |
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