Created
October 22, 2018 14:19
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concurrency.js
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const state = { | |
counter: 0 | |
}; | |
const randomInt = (min, max) => | |
Math.floor(Math.random() * (max - min + 1)) + min; | |
const sleep = (min, max = min) => | |
new Promise(resolve => { | |
setTimeout(resolve, randomInt(min, max)); | |
}); | |
const incrementCounter = () => { | |
const currentCounter = state.counter; | |
sleep(1000, 2000).then(() => { | |
state.counter = currentCounter + 1; | |
}); | |
}; | |
incrementCounter(); | |
incrementCounter(); | |
sleep(3000).then(() => console.log(state.counter)); // aléatoirement 1 ou 2 |
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