Fellow Tapestry Users, I have the following code in Tapestry
<t:loop source="ubForm.conditioncodes" value="conditioncode" index="conditionindex" encoder="conditionCodeEncoder"> <t:zone id="conditionZone" t:id="conditionZone"> <td> <INPUT t:type="TextField" maxlength="2" t:clientEvent="change" t:event="updateConditionCode" t:zone="conditionZone" t:clientid="${getConditionCodeId('conditioncode', conditionindex)}" t:value="conditioncode.conditioncode" t:mixins="ZoneUpdater" style="width:90%; height:25px; border:none;" /> </td> </t:zone> </t:loop> Bascially the issue i am running into is if the user goes and backspaces the contents of the textfield, my event , updateConditionCode fires, but the parms passed into the event are null! Here is my code, had to tweak ZoneUpdater.js so i could include the id of the control that triggered the event (function($) { window.T5JQZoneUpdater = function(spec) { var elementId = spec.elementId; var element = document.getElementById(elementId); var url = spec.url; var $zone = $('#' + spec.zone); var updateZone = function() { var updatedUrl = url; var params = {}; params.param = element.value; params.id = elementId; params.target = event.target.id; $zone.tapestryZone('update', { url : updatedUrl, params : params }); } if (spec.event) { var event = spec.event; $(element).bind(event, updateZone); } return { updateZone : updateZone }; }; })(jQuery); Can someone suggest a way for me to get the id of the input control that triggered the event when user clears its contents? I have seen comments about how keyup/change evnt does not appear to trigger the event but if you put spaces it does. The goal here is if user backspaces and clears the field i wanted to use the zoneUpdater to inform my POJO to clear its contents Thanks for your help