title: how to call multiple onkeyup events on one html-tag
body: <p>can i call multiple onkeyup events on the same html input-tag?</p>
  
  <pre><code>&lt;input style="float: left; width: 50px;" id="PersonLength" name="PersonLength" onkeyup="checkNr(this.id)" onkeyup="fill()" type="text"&gt; 
  </code></pre>
  
  <p>something like that?</p>
  
  <pre><code>&lt;input style="float: left; width: 50px;" id="PersonLength" name="PersonLength"  
  onkeyup="checkNr(this.id), fill()" type="text"&gt; 
  </code></pre>
  
  <p>or like this? ive treid them both but i might have the wrong syntax? or is there a better way to do it?</p>