Do While loop - Simply add numbers

Question

I need to prompt the user to enter a series of numbers, or the word "quit". Then, If the user enters a number, add the new number to a running total. And, If the user enters the word "quit" the loop should stop execution. I cant figure what should I do here. Im a beginner. i don't know how to make it work when user enter a word quit

let total = 0;
let number = 0;
do {
  total += number;
  number = parseInt(prompt('Enter a number: '));
  if (number >= 0) {
    document.writeln("<p>You entered " + number + "!</p>");
  } else {
    if (isNaN(number)) {
      number = parseInt(prompt('Enter a number: '));
      document.writeln("<p>Try again. We are looking for a number!</p>");
    }
  }
} while (number >= 0)
document.writeln("<p>The total is " + total + "</p>")

Answer 1

Use break to stop the javascript loop:

let total = 0;
let number = 0;
    do {
        total += number;
        text = prompt('Enter a number: ');
        if (text == "quit") {
           break;
        }
        number = parseInt(text);
        if (number >= 0) {
            document.writeln("<p>You entered " + number + "!</p>");
        } else {
            if (isNaN(number))  {
                number = parseInt(prompt('Enter a number: '));
                document.writeln("<p>Try again. We are looking for a number!</p>");
            } 
        }
    } while(number >= 0)
    document.writeln("<p>The total is " + total + "</p>")