how is the control flowing in below code?

Question

https://code.sololearn.com/WJpBXcYtBAzb/#

how flag3 is printed after flag2. I didn't understand the control flow here.

Answer 1

The callback queue is where a Promise's result is stored. Once the call stack is empty, the callback queue places the next available call, if any.

The console.log calls are running on the call stack.