title: Delete default value of an input text on click
body: <p>I have an input text:</p>
  <pre><code>&lt;input name=&quot;Email&quot; type=&quot;text&quot; id=&quot;Email&quot; value=&quot;email@abc.example&quot; /&gt;
  </code></pre>
  <p>I want to put a default value like &quot;What's your programming question? be specific.&quot; in Stack Overflow, and when the user click on it the default value disapear.</p>