JQUERY

$(‘.js-checkout‘).on(‘click‘, function() {
        if($(‘#hasError‘).val()==‘true‘){
            return;
        }

// var $this=$(this),
// url = ‘/cartridges/main/cart/userPermiss-popupError.jsp‘,

url=‘/cartridges/main/cart/userPermiss-popupError.jsp‘
        // url = ‘/ferguson/www.war/cartridges/main/cart/unavailableErrorModal.jsp‘,
       var $modal;
        $.post(url,null).done(function(result){
                 if(result ==‘‘){
                     $("#b2bCheckoutNowForm").submit(); 
                 } else {
                     $modal = $(result);
                     $modal.appendTo($(‘body‘));
                     $modal.modal({
                    "show" : true
                    })
                 }
                })
    });

JQUERY

原文：http://my.oschina.net/u/876290/blog/346429