title: Javascript Input Numbers
body: <p>How do you take 2 numbers from the User with window.prompt and add them up without concatenating? </p>
  
  <p>What I thought was:</p>
  
  <pre><code>var temp = window.prompt("Number1")
  var temp2 = window.prompt("Number2")
  var answer = temp + temp2;
  document.write(answer);
  </code></pre>
  
  <p>but it only concatenates not adds.</p>