Can't validate my static option button list - php

Question

I created a static option list in a page and I want to validate using JavaScript instead of AJAX:
<?php echo $form->labelEx($model,'emlevel'); ?>
<?php
echo $form->radioButtonList($model,'emlevel',
array('L'=>'Low','M'=>'Moderate','X'=>'Low Moderate', 'H'=>'High'),
array('separator' => " " ));
?>
<?php echo $form->error($model,'emlevel'); ?>
function chk()
{
// first I checked the value for emlevel to verify it get the value or not
//but it shows undefined
alert (document.forms["ConsultationNew"] ["ConsultationNew[enc_type]"].value);
if (document.forms["ConsultationNew"]["ConsultationNew[emlevel]"].value == null) {
alert ('choose one EMlevel'); return false;
}
}
I am not able to get value by document.getelement ....value. it shows undefined

Answer 1

You probably want to use CActiveForm. Clientside validation is configured as follows:
<?php $form=$this->beginWidget('CActiveForm', array(
'id'=>'login-form',
'enableAjaxValidation'=>false,
'enableClientValidation'=>true,
'clientOptions' => array (
'validateOnSubmit' => true,
'validateOnChange' => true,
'validateOnType' => true,
),
)); ?>
As you are working in Yii already, I would definitely use CActiveForm for client-side validation (and also for Ajax and server-side validation). It works like a charm. You must have better things to do than to reinvent the wheel in programming validation in Javascript.