Using promises stops variable being set

April 18, 2023

The following code sets the row.already_messaged_clients absolutely fine and is accessible outside of the loop.

businesses.forEach(async function(row) {
// let already_messaged_clients_arr = await getAlreadyMessagedClientsForPlaceID(row.place_id);
row.already_messaged_clients = 3;
});

When I use an await like this:

businesses.forEach(async function(row) {
let already_messaged_clients_arr = await getAlreadyMessagedClientsForPlaceID(row.place_id);
row.already_messaged_clients = 3;
});

row.already_messaged_clients does not get set. Why is this?

Thanks for your help

>Solution :

you can use a ‘for…of’ loop instead of ‘forEach’

for (let row of businesses) {
  let already_messaged_clients_arr = await 
  getAlreadyMessagedClientsForPlaceID(row.place_id);
  row.already_messaged_clients = 3;
}