title: beginner javascript for loop puzzle
body: <p>I'm new at javascript was wondering why I got four return values:</p>
  
  <pre><code>for(i=0; i &lt; 10; i++) {
      i = i * i;
      console.log(i);
  }
  // 0
  // 1
  // 4
  // 25
  </code></pre>