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串行Promise的实现 #16

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jindada opened this issue Jul 12, 2019 · 0 comments

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jindada commented Jul 12, 2019 •

edited

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const data = [1, 2, 3, 4, 5];

const request = item => new Promise(resolve => 
  setTimeout(() => {
     console.log(item);
     resolve(item);
  }, 2000)
);

const queue = async data => {
  let result = [];
  for (let item of data) {
     result.push(await request(item));
  }
  return await result;
};

queue(data).then(data => console.log('结束', data));

jindada changed the title ~~串行的Promise实现~~ 串行Promise的实现

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