In JavaScript, does using await inside a loop block the loop?

Question

Take the following loop:

for(var i=0; i<100; ++i){
    let result = await some_slow_async_function();
    do_something_with_result();
}

Answer 1

ad 1. Yes. No.

ad 2. Yes. No.

Proof:

async function start() 
{
  console.log('Start');

  for (var i = 0; i < 10; ++i) {
    let result = await some_slow_async_function(i);
    do_something_with_result(i);
  }
  
  console.log('Finish');
}

function some_slow_async_function(n) {
  return new Promise(res => setTimeout(()=>{
    console.log(`Job done: ${(2000/(1+n))|0} ms`);
    res(true);
  },2000/(1+n)));
}

function do_something_with_result(n) {
  console.log(`Something ${n}`);
}

start();