Prototype / Javascript Hints Dec 03, 2008
Make sure a form element was selected.
<form> <input type="text" name="foo" id="theid"> <input type="submit" name="submit" id="submit" value="submit"> </form>
<script> if($F('theid')!='') { $('submit').enable(); } else { $('submit').disable(); } </script>
Put a little note of why the submit was disabled.
<div id="notice"></div> <script> if($F('theid')!='') { $('notice').update(''); $('submit').enable(); } else { $('notice').update('Please complete all the fields above.'); $('submit').disable(); } </script>
Put the cursor in the input field.
$('theid').focus();
Page 1 of 1 |