magento的ajax

magento的ajax有两种形式。

  new Ajax.Request("<?php echo Mage::getUrl('subscribe/stock/view') ?>", {
                        method: 'post',
                        parameters:param,
                        onLoading : function(re){
                        },
                        onSuccess: function(data) {                    
                        },
                        onComplete:function () {             
                        }
                    });

  $.ajax({
               url:'<?php echo $this->getSubmitUrl($_product) ?>' ,
                method: 'post',
                data:{
                   email:$('#notice-email').val()
                },
                beforeSend:function(xhttp){
                },
                success:function (t) {
                },
                complete:function () {
                }
            });