title: Metacharacters and parenthesis in regular expressions
body: <p>Can anyone elaborate/translate this regular expression into English?</p>
  
  <p>Thank you.</p>
  
  <pre><code>var g = "123456".match(/(.)(.)/);
  </code></pre>
  
  <p>I have noticed that the output looks like this: </p>
  
  <pre><code>12,1,2
  </code></pre>
  
  <p>and I know that dot means any character except new line. But what does this actually do?</p>