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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops A Closer Look at Loop Conditions

Code doesn't work on Opera but does work on Firefox. What would cause this since this is basic Javascript?

var upper = 10000;
var randomNumber = getRandomNumber(upper);
var guess;
var attempts = 0;

function getRandomNumber(upper) {
  return Math.floor( Math.random() * upper ) + 1;

while(guess !== randomNumber){
  guess = getRandomNumber(upper);
  attempts += 1;

  document.write("<p>The random number was : " + randomNumber + "</p>");
  document.write("<p>It took the computer" + attempts + "attempts</p>");
Steven Parker
Steven Parker
217,640 Points

For code formatting, use 3 backticks (```) instead of apostrophes ('''), and on a separate line.