title: Make a jquery icon visible using on keyup event
body: <p>Stumped at this part. I have a simple html input, and a jquery ui icon. What I want to do is have the icon hidden untill a "keyup" event of some sort is fired on the html input. Currently have the css property of the icon set to  <code>display:none;</code>, but how would I use javascript to display this after some text is put into the html input?
  <br><br>
  --Here's my code
  <br><br></p>
  
  <pre><code>&lt;input id="solo1" /&gt; &lt;div id="saveButton" class="ui-state-default ui-corner-all" title="Save" style="float:left; display:none; height:20px;" &gt;&lt;span class="ui-icon ui-icon-disk"&gt;&lt;/span&gt;&lt;/div&gt;
  </code></pre>