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in Technique[技术] by (71.8m points)

javascript - 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/

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1 Reply

0 votes
by (71.8m points)

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


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