magento自带了prototype这个JS框架,因为prototype封装了常用的ajax功能,所以magento也可以很方便的使用ajax。
/**
 * Created by PhpStorm.
 * User: ajiang-tuz
 * Date: 2015/5/18
 * Time: 10:03
 * Note ajax 测试
 */
	<script type="text/javascript">
	var url = 'http://127.0.0.1/magento/weicot/index/ajax';
        new Ajax.Request(url, {
                method: 'get',
                onComplete: function(response)  {
                    if(response.status == 200)  {
                           //判断返回状态
                         var result = response.responseText.evalJSON(); 
                           //返回一个josn 对象 {"date":"11\/24\/15 0923::49 PM"}
                    
                    }//结束
					//直接获得 返回数据 
					 var val = result.date; //11\/24\/15 0923::49 PM	           }
});
phtml中引入js文件
 
<script type="text/javascript" src="<?php echo $this->getSkinUrl('js/date.js') ?>"></script>   
php文件,/your_module/your_controller.php
//http://127.0.0.1/magento/weicot/index/ajax  前端控制器
<?php
/**
 * Created by PhpStorm.
 * User: ajiang-tuz
 * Date: 2015/11/18
 * Time: 10:03
 * Note ajax 测试
 */
class Aps_Weicot_IndexController extends    Mage_Core_Controller_Front_Action
{
   public function ajaxAction(){
		 $dataput=Date("m/d/y h:i:s A", strtotime(Mage_Core_Model_Locale::date(null, null, "en_US", true))); 
		$data=array('date'=>$dataput);
		echo Zend_Json::encode($data);
	}
}
参考 以及引用
<script type="text/javascript">
//<![CDATA[
    //var dataForm = new VarienForm('form-validate', true);
    <?php if($this->getShowAddressFields()): ?>
    new RegionUpdater('country', 'region', 'region_id', <?php echo $this->helper('directory')->getRegionJson() ?>);
    <?php endif; ?>
    $('create-account-button').observe('click', function(e)    {
        Event.stop(e);
        var url = '<?php echo $this->getUrl('onestepcheckout/ajax/register', array('_secure'=>true)); ?>';
        var parameters = $$('form.register-form').first().serialize(true);
        new Ajax.Request(url, {
                method: 'post',
                parameters: parameters,
                onComplete: function(response)  {
                    if(response.status == 200)  {
                         var result = response.responseText.evalJSON();
                         if(result.success && result.message == 'customer_logged_in')   {
                             window.location='<?php echo $this->getUrl('customer/account', array('_secure'=>true)); ?>';
                         }
                         else   {
                            alert('Error occured: ' + result.error);
                         }
                    }
                }
        });
    });
//]]>
</script>
?>