Nodejs Synchronous For each loop

Question

I want to do a for each loop but have it run synchronously. Each iteration of the loop will do an http.get call and that will return json for it to insert the values into a

Answer 1

Just wrap the loop in an async function. This example illustrates what I mean:

const oneSecond = async () => 
    new Promise((res, _) => setTimeout(res, 1000));

This function completes after just 1 second:

const syncFun = () => {
    for (let i = 0; i < 5; i++) {
        oneSecond().then(() => console.log(`${i}`));
    }
}

syncFun(); // Completes after 1 second ❌

This one works as expected, finishing after 5 seconds:

const asyncFun = async () => {
    for (let i = 0; i < 5; i++) {
        await oneSecond();
        console.log(`${i}`);
    }
}

asyncFun(); // Completes after 5 seconds ✅