async await foreach javascript code example

Example 1: foreach async typescript

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

Example 2: async foreach

async function asyncForEach(array, callback) {
  for (let index = 0; index < array.length; index++) {
    await callback(array[index], index, array);
  }
}

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

Example 3: typescript foreach async await

export async function asyncForEach<T>(array: Array<T>, callback: (item: T, index: number) => void) {
        for (let index = 0; index < array.length; index++) {
            await callback(array[index], index);
        }
    }

await asyncForEach(receipts, async (eachItem) => {
    await ...
})

Example 4: C# foreach loop async but wait at end

public async Task RunAsync()
{
    var tasks = new List<Task>();
 
    foreach (var x in new[] { 1, 2, 3 })
    {
        var task = DoSomethingAsync(x);
        tasks.Add(task);
    }
 
    await Task.WhenAll();
}

Example 5: foreach async not working

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

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