title: Autofill a text form value after select an option form
body: <p>I have 2 form</p>
  
  <pre><code>&lt;select&gt;
    &lt;option&gt;Rose&lt;/option&gt;
    &lt;option&gt;Violet&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>and</p>
  
  <pre><code>&lt;input type="text" value="Autofill here" /&gt;
  </code></pre>
  
  <p>if users select Rose, a text form value will be "Red" automatically.</p>
  
  <p>if users select Violet, a text form value will be "Blue" automatically.</p>
  
  <p>Did you have a simple sample for this?</p>