title: How to add placeholder for my form XML fields in joomla
body: <p>I am using Joomla inbuilt registration form and I added some fields to that form.</p>
  
  <p>I need to add placeholder for my form but "placeholder" keyword is not working.</p>
  
  <p>registration.xml</p>
  
  <pre><code>&lt;field name="city" type="text" description="Enter your city" 
         label="City" required="true" size="10" filter="string" /&gt; 
  </code></pre>