title: Find if a number is divisible by 3 or 5 (FizzBuzz)
body: <p>How do I change the output depending on whether or not it is divisible by 3 or 5? If it is divisible by 3, I want to show "rock" and if it's divisible by 5 I want to show "star" (similar to in FizzBuzz). If both, they'll see both. </p>
  
  <p>Here's my code:</p>
  
  <pre><code>if (var n = Math.floor((Math.random() * 1000) + 1); {
    var output = "";
    if (n % 3 == 0)
      output += "Rock";
    if (n % 5 == 0)
      output += "star";
    prompt(output || n);
  }
  </code></pre>
  
  <p>Why isn't my code working properly?</p>