Get id from javascript

how can i get value in javascript?

<div class="input-group-btn clearfix">

                        &lt;?php


                        


                        &#036;comList = Company::model()-&gt;findAll();


                        &#036;comlist = CHtml::listData(&#036;comList, 'company_id', 'name');


                        echo CHtml::dropDownList('company_id', 'company_id', &#036;comlist, array('empty' =&gt; 'All Company', 'class' =&gt; 'form-control', 'style' =&gt; 'width: auto &#33;important'));


                        


                        &#036;comCatList = CompanyCategory::model()-&gt;findAll();


                       // pr(&#036;comCatList);


                        &#036;comcatlist = CHtml::listData(&#036;comCatList, 'id', 'name');


                        echo CHtml::dropDownList('com_cat_id', 'com_cat_id', &#036;comcatlist, array('empty' =&gt; 'All CompanyCategory', 'class' =&gt; 'form-control', 'style' =&gt; 'width: auto &#33;important'));


                        


                        &#036;categoryList = Category::model()-&gt;findAll();


                        &#036;catlist = CHtml::listData(&#036;categoryList, 'category_id', 'name');


                        echo CHtml::dropDownList('category_id', 'category_id', &#036;catlist, array('empty' =&gt; 'All Category', 'class' =&gt; 'form-control', 'style' =&gt; 'width: auto &#33;important'));


                        ?&gt;





                        &lt;input type=&quot;text&quot; name=&quot;q&quot; id=&quot;q&quot; class=&quot;form-control&quot; placeholder=&quot;search by name&quot; size=&quot;30&quot;/&gt;


                        &lt;button type=&quot;button&quot; id=&quot;search&quot; class=&quot;btn btn-info&quot;&gt;&lt;?php echo Yii::t(&quot;strings&quot;, &quot;Search&quot;); ?&gt;&amp;nbsp;&lt;img class=&quot;ajaxLoader&quot; src=&quot;&lt;?php echo Yii::app()-&gt;request-&gt;baseUrl; ?&gt;/img/loading.gif&quot; alt=&quot;Loading...&quot; style=&quot;display: none;&quot;&gt;&lt;/button&gt;


                    &lt;/div&gt;


                &lt;/div&gt;

Which value do you need?