Enable/disable text field upon change of combo box

paulobrads · Jul 17, 2006

Hi,

This isn't that tricky but I've scoured the web and can't find anything.

I'm looking for code that will only enable a disabled text field if a certain value is selected within a combo box. Obviously it will need to be disabled again if the combo box option changes again.

Cheers in advance,
Paul.

kaht · Jul 17, 2006

Here's an example:

Code:

<script type="text/javascript">

function disableField(obj) {
   var textField = document.getElementById("blah");
   if (obj.value == "enable") {
      textField.disabled = false;
   }
   else {
      textField.disabled = true;
   }
}

</script>
<body>
<input type="text" id="blah">
<select onchange="disableField(this)">
   <option value="enable" selected="selected">enable</option>
   <option value="disable">disable</option>
</select>
</body>

-kaht

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Enable/disable text field upon change of combo box

paulobrads

Programmer

kaht

Programmer

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