user3263266 user3263266 - 4 months ago 28
HTML Question

Want to show/hide div based on dropdown box selection

I want to have jQuery show div id='business' only if 'business use' is selected in the dropdown box.

This is my code:

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js">
</script>
<script>
$('#purpose').on('change', function() {
if ( this.value == '1');
{
$("#business").show();
}
else
{
$("#business").hide();
}
});
});
</script>
<body>
<select id='purpose'>
<option value="0">Personal use</option>
<option value="1">Business use</option>
<option value="2">Passing on to a client</option>
</select>
<div style='display:none;' id='business'>Business Name<br/>&nbsp;
<br/>&nbsp;
<input type='text' class='text' name='business' value size='20' />
<br/>
</div>
</body>


and the JSFiddle: http://jsfiddle.net/2kGzZ/1/

Answer

Try to wrap the code within $(document).ready(function(){...........}); handler , also remove the ; after if

$(document).ready(function(){
    $('#purpose').on('change', function() {
      if ( this.value == '1')
      //.....................^.......
      {
        $("#business").show();
      }
      else
      {
        $("#business").hide();
      }
    });
});

Fiddle Demo