Best way to hide/show elements dinamically

I am asking this because I don’t have so much knowledge about jQuery.

My form have a dropdownList with Yes/No options. If user select ‘Yes’, my form must show him a dependant textbox.

Reload the page is not a solution for me.

Please, gentleman, show me how can I do that! :D

well, there are multiple ways to do it. I’d just add something like this to my drop-down element.

<?= CHtml::formFieldType($model, 'fieldName', array( 'onChange' => 'javascript:yourExternalJsFunction()' ) ); ?>

and your ‘yourExternalJsFunction’ would display or generate your next drop-down,text,checkbox, etc field…

hope this helps.


Sorry, my topic is in the wrong place (Can some admin move this topic to General Discussion? Thx!)

imehez, thanks for your response. But, I was expecting something in jQuery mode. jQuery has something like js:$(‘mydiv’).toggle()?

Yep (you should change selectors #mydiv and #dropdownlist to yours)


  var droplist = $('#dropdownlist');


    if (droplist.val() == 'Yes') {



    else {





or this code can be simpler if initial option is "No":


  var droplist = $('#dropdownlist');





BTW. "best practice" to choose from 2 options (yes/no true/false) is checkbox.

I knew it!! Thank you fduch!! ^^

Last question: Where should I put these codes? Inside a <script> tag on my form?

Edit: SOLVED!!! It is working like a charm!!

Anywhere at your page between <script></script> tags. Do not forget to change selectors! :)

Example with jQuery and Yii

<?= CHtml::checkBox('blah', false,

	array('id' => 'someid', 'onchange' => 'javascript:$("#someid").toggle()'

) ); ?>


Unfortunately, I had to use pure javascript (to avoid jQuery charge and reduce traffic). But, i will have to use it some time.

this is what i get, which does not work:

<?php echo CHtml::radioButtonList('userType', 'id', array('Existing', 'New User'), array('onchange'=>'javascript:$("#userTypeForm").toggle();')); ?>

which produces

 <input onchange="javascript:$(&quot;#userTypeForm&quot;).toggle();" value="0" id="userType_0" type="radio" name="userType" />

is there any way to stop it from: turning " in to &quot;?

If i’m not wroong you must ise this way:

<?php echo CHtml::radioButtonList('userType', 'id', array('Existing', 'New User'), array('onchange'=>'js:$("#userTypeForm").toggle();')); ?>

Note the use of ‘js’ against ‘javascript’.

Thanks PoL, I’ll give it a shot when I get home from work.

I use [size="3"]display element on dropdown selection[/size] ,

I want to display another dropdown on selection of first one and I use following code .

step : 1 => code for view file

<div class="row">                                              //   first dropdown for selection

		<?php echo $form->labelEx($model,'E_ROLE'); ?>

		<?php echo $form->dropDownList($model,'E_ROLE',array(""=>"Select","Admin"=>"Admin","Employee"=>"Employee","TL"=>"TL"),array('onchange'=>'return muFun(this.value)')); ?>

		<?php echo $form->error($model,'E_ROLE'); ?>




    <div id="TLID_DIV" style="display:none">                  //   hidden dropdown enable on selection first one

   		<div class="row">

		<?php echo $form->labelEx($model,'E_TLID'); ?>

	       <?php echo CHtml::activeDropDownList($model,'E_TLID', $model->getTL() , array('prompt'=>'Select') ); ?>

		<?php echo $form->error($model,'E_TLID'); ?>



step : 2 => code for js

function muFun(obj){



		return false;



		return false;



@Kiran Sharma

when posting code you can use the code button (<> on the editor toolbar)… so that your code is more readable… or use [ code] your code [ /code] directives (without spaces)

NOTE: you can edit your posts to add this codes…

@mdomba , thankx.

Sorry my English. I’m starting at Yii and I understand very little of js, I wonder if you have the rest of this solution. Missing yourExternalJsFunction how about it?

Hi All,

I am a newbie to yii and trying to hide and show form elements based on selection of an option from another field.

My form has a dropDownList with "-/Low/High " and I want to display a low field if low is selected, or a high field if high is selected.

This is my form

<td id="riskDropDownList">

<?php echo $form->labelEx($model,‘patient_risk’); ?>

<?php echo ZHtml::enumDropDownList($model,‘patient_risk’,array(‘style’=>‘width:262px;’,)); ?>

<?php echo $form->error($model,‘patient_risk’); ?>


<td class="lowRiskField">

<?php echo $form->labelEx($model,‘if_risk_low_risk_factor’); ?>

<?php echo $form->dropDownList($model,‘if_risk_low_risk_factor’, $model->riskFactorArray()); ?>

<?php echo $form->error($model,‘if_risk_low_risk_factor’); ?>


<td class="highRiskField">

<?php echo $form->labelEx($model,‘if_risk_high_risk_factor’); ?>

<?php echo $form->dropDownList($model,‘if_risk_high_risk_factor’,$model->riskFactorArray()); ?>

<?php echo $form->error($model,‘if_risk_high_risk_factor’); ?>


and this is my JQuery script

<script type="text/javascript">


$("#riskDropDownList").change(function() {

if ($("#riskDropDownList").val() == ‘Low’)




else if ($("#riskDropDownList").val() == ‘High’)













Many thanks for your help in advance


yes the code looks fine,

why you had use [color="#1C2837"][size="2"]$("#riskDropDownList").change() at the end of script…?[/size][/color]


[size="2"][color="#008000"]This topic should be in proper section, I think its not related to Bug Discussion[/color][/size]

[size=“2”][color="#008000"]Topic started before much time so i think current staff hasn’t point out - which is quite obvious :)


This is a great way of doing it.

I am trying to achieve something similar but with checkboxes and I am using Bootstrap toggleButtonRow widgets. The toggleButtonRow field just adds


to the code when it is clicked. Does anyone know how to do a show/hide div with this kind of thing?

Many thanks

Problem solve Thanks Sharma ji

Hi fduch,

Similar question, where exactly I put this code? is it in my view? I can’t find any script tag in my view. Thanks for the explanation.

I have a checkbox:

<?php echo $form->checkBox($model, 'tbo_sk'); ?>

and a text field:

<?php echo $form->textField($model, 'nilaiblksk'); ?>

Solved, thanks fduch.

So for the checkbox I did similarly to the js file like this:


    $('#Dcl_tbo_sk').change(function(){ // where Dcl_tbo_sk is my model & table (model_table)

        $('#hiddenDiv').toggle(); // hiddenDiv replace our Dcl_nilaiblksk as model & table (model_table)



Then my view for checkBox & textField becomes:

<?php echo $form->checkBox($model, 'tbo_sk'); ?>

<div id="hiddenDiv" style="display: none"<?php echo $form->textField($model, 'nilaiblksk'); ?></div>

That will do