title: Change content of input depending on selected option
body: <p>I am facing a little problem. Here is my code (a simple form) :</p>
  
  <pre><code>&lt;form id="form-mission" method="post" action="mission.php"&gt;
      &lt;ul&gt;
      &lt;li class="except"&gt;
      &lt;select name="membre"&gt;
          &lt;option value=0&gt; Lucy &lt;/option&gt;
          &lt;option value=1&gt; John &lt;/option&gt;
          &lt;option value=3&gt; Peter &lt;/option&gt;&lt;/select&gt;
      &lt;/li&gt;
  
      &lt;!--Content--&gt;
      &lt;li&gt;&lt;textarea name="texte" id="text_area" &gt;&lt;/textarea&gt;&lt;/li&gt;
  
      &lt;!-- Submit --&gt;
      &lt;li class="except"&gt;&lt;input type="submit" value="Submit" /&gt;&lt;/li&gt;
      &lt;/ul&gt;
  
  &lt;/form&gt;
  </code></pre>
  
  <p>I would like to set the textarea text depending on which name is selected but before we submit the form. In fact, when the option is changed, i want the content of the textarea also changed. </p>
  
  <p>Could you help me please ?
  Thanks !</p>