Should console.log yield control?

[arjunguha]

Today I tried to run effectively this program:

let exit = false;
while (!exit) {
  if ('redbull64' === prompt('Enter password')) {
    exit = true;
  }
  else {
    console.log('Wrong password');
  }
}

If the user keeps entering the wrong password, this program does not reliably display "wrong password" on each iteration. The problem is that console.log involves DOM updates that only display when the turn ends. Neither console.log nor prompt end the turn, so the turn only ends when Stopify suspends the loop, which is nondeterministic.

So, we need either console.log or prompt to suspend and immediately resume execution. I propose we modify console.log, so that it always prints immediately. This will significantly slow down programs that display in a loop, but it will make them more responsive.