create a function that will call an async function for each iteration of an array and await the return of each async call before iterating the next element in the array in javascript

To create a function that will call an async function for each iteration of an array and await the return of each async call before iterating the next element, you can use a combination of for...of loop and async/await syntax. Here's an example:

index.tsx
async function processArray(array) {
  for (const item of array) {
    // Perform the async operation and await its completion
    await asyncOperation(item);
  }
}

async function asyncOperation(item) {
  // Perform your async operation here
  // You can use any async function within this method
  // For example, you can make an API call or perform a database operation

  // Simulating an async operation using setTimeout
  return new Promise((resolve) => {
    setTimeout(() => {
      console.log(`Processed item: ${item}`);
      resolve();
    }, 1000);
  });
}

// Example usage
const myArray = [1, 2, 3, 4, 5];
processArray(myArray);
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In the above example, the processArray function takes an array as a parameter and then iterates over each item using a for...of loop. Inside the loop, it calls the asyncOperation function for each item and uses await to wait for the completion of the async operation before moving to the next iteration.

The asyncOperation function is an example of an async function. You can replace it with your own implementation, such as making an API call or performing a database operation. In this example, we simulate an async operation using setTimeout with a delay of 1 second.

Please note that when using await inside a loop, the iterations will be blocking, meaning the next iteration will not start until the current one has completed. If you want to parallelize the async operations, you can create an array of promises and use Promise.all instead of the for...of loop.