title: Pre-populating form inputs with URL parameter values
body: <p>I want to prepopulate a form with variables from a url.  How do I do this?</p>
  
  <p>For example:</p>
  
  <pre><code>http://somewhere.com?name=john
  </code></pre>
  
  <p>Then the name field in a form would be prepopulated with "John", and if there was no name in the URL then the field would be empty and ready to be filled in.</p>
  
  <p>Thanks in advance..</p>