<form action=" id="mass_forms"> <input name="form_key" type="hidden" value="<?php echo Mage::getSingleton('core/session')->getFormKey() ?>" /> <select id="mainStatus" onChange="getSubStatus()"> <option value=''>Select Status</option> <?php foreach($item_Status as $itemstatus){?> <option value='<?php echo $itemstatus['id'] ?>'><?php echo $itemstatus['value'] ?></option> <?php } ?> </select> </form> //////////////////////////////////////////////////////////////////////////////// Script: <script> function getSubStatus(){ var posdata = jQuery("#mass_forms").serializeArray(); var url = "<?php echo $this->getUrl('marketplaceadmin/adminhtml_orderview/getsubstaus');?>"; jQuery.ajax({ type: "POST", url: url, datatype: "text