title: Dash in Javascript date
body: <p>I suppose this is absolute novice question in javascript.</p>
  
  <p>I want to know what do '-' mean in javascript date.</p>
  
  <p>Example: new Date(2010, 12 - 1, 10, 22, 00, 00);</p>
  
  <p>What does 12 - 1 say in the above.</p>
  
  <p>Thanks</p>