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Do not use forEach with async-await

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Vishnu answered on September 15, 2020 Popularity 9/10 Helpfulness 2/10

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Do not use forEach with async-await

Do not use forEach with async-await

Comment

0

const players = await this.getWinners();

// BAD
await players.forEach(async (player) => {
  await givePrizeToPlayer(player);
});

await sendEmailToAdmin('All prizes awarded');

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: gist.github.com

Tags: async-await foreach javascript

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Vishnu

Contributed on Jul 09 2022

Vishnu

0 Answers Avg Quality 2/10

Closely Related Answers

async await forEach

Comment

19

// Array.prototype.forEach is not designed for asynchronous code.
// Instead use await Promise.all to process all in parallel if the order doesn't matter.
await Promise.all(array.map(async (element) => {
  await someFunction(element);
}))

Popularity 10/10 Helpfulness 6/10 Language javascript

Source: gist.github.com

Tags: async-await asyn

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SubZ390

Contributed on Nov 21 2021

SubZ390

0 Answers Avg Quality 2/10

javascript await in foreach loop

Comment

1

async function printFiles () {
  const files = await getFilePaths();

  for (const file of files) {
    const contents = await fs.readFile(file, 'utf8');
    console.log(contents);
  }
}

Popularity 8/10 Helpfulness 5/10 Language javascript

Source: Grepper

Tags: foreach javascript

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Helt

Contributed on Oct 09 2023

Helt

0 Answers Avg Quality 2/10

async foreach

Comment

0

[1, 2, 3].forEach(async (num) => {  await waitFor(50);  console.log(num);});console.log('Done');

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: codeburst.io

Tags: foreach

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Silly Salmon

Contributed on Sep 15 2020

Silly Salmon

0 Answers Avg Quality 2/10

Do not use forEach with async-await

Comment

0

const players = await this.getWinners();

// BAD
await players.forEach(async (player) => {
  await givePrizeToPlayer(player);
});

await sendEmailToAdmin('All prizes awarded');

Popularity 9/10 Helpfulness 3/10 Language javascript

Source: gist.github.com

Tags: async-await asyn

Share

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Vishnu

Contributed on Jul 09 2022

Vishnu

0 Answers Avg Quality 2/10

Do not use forEach with async-await

Comment

0

const players = await this.getWinners();

// BAD
await players.forEach(async (player) => {
  await givePrizeToPlayer(player);
});

await sendEmailToAdmin('All prizes awarded');
============================
Ideal way is


for (const player of players) {
  await givePrizeToPlayer(player);
}

Popularity 9/10 Helpfulness 3/10 Language whatever

Source: gist.github.com

Tags: async-await asyn

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Vishnu

Contributed on Jul 09 2022

Vishnu

0 Answers Avg Quality 2/10

js await in foreach

Comment

0

for await (const results of array) {
    await longRunningTask()
  }
  console.log('I will wait')

Popularity 9/10 Helpfulness 3/10 Language javascript

Source: stackoverflow.com

Tags: foreach

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Strange Snake

Contributed on Jul 19 2023

Strange Snake

0 Answers Avg Quality 2/10

Do not use forEach with async-await

Comment

0

const players = await this.getWinners();

// BAD
await players.forEach(async (player) => {
  await givePrizeToPlayer(player);
});

await sendEmailToAdmin('All prizes awarded');

Popularity 9/10 Helpfulness 3/10 Language javascript

Source: gist.github.com

Tags: async-await asyn

Share

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Vishnu

Contributed on Jul 09 2022

Vishnu

0 Answers Avg Quality 2/10

Do not use forEach with async-await

Comment

0

const players = await this.getWinners();

// BAD
await players.forEach(async (player) => {
  await givePrizeToPlayer(player);
});

await sendEmailToAdmin('All prizes awarded');

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: gist.github.com

Tags: async-await asyn

Share

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Vishnu

Contributed on Jul 09 2022

Vishnu

0 Answers Avg Quality 2/10

use await in for each

Comment

-1

files.forEach(async (file) => {
    const contents = await fs.readFile(file, 'utf8')
})

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: stackoverflow.com

Tags: each

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Hurt Hamster

Contributed on Mar 04 2022

Hurt Hamster

0 Answers Avg Quality 2/10

Do not use forEach with async-await

Comment

0

const players = await this.getWinners();

// BAD
await players.forEach(async (player) => {
  await givePrizeToPlayer(player);
});

await sendEmailToAdmin('All prizes awarded');

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: gist.github.com

Tags: async-await asyn

Share

Link to this answer
Share Copy Link

Vishnu

Contributed on Jul 09 2022

Vishnu

0 Answers Avg Quality 2/10

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