title: jQuery - passing value from one input to another
body: <p>I have a form, with several input fields that are <code>title</code>, <code>name</code>, <code>address</code> etc</p>
  
  <p>What I want to do, is to get these values and 'put them' into values of other input fields. For example</p>
  
  <pre><code>&lt;label for="first_name"&gt;First Name&lt;/label&gt;
  &lt;input type="text" name="name" /&gt;
  
  &lt;label for="surname"&gt;Surname&lt;/label&gt;
  &lt;input type="text" name="surname" /&gt;
  
  &lt;label for="firstname"&gt;Firstname&lt;/label&gt;
  &lt;input type="text" name="firstname" disabled="disabled" /&gt;
  </code></pre>
  
  <p>So If I enter <code>John</code> in the <code>first_name</code> field, then the value of <code>firstname</code> will also be <code>John</code>.</p>
  
  <p>Many thanks</p>