回车键确认功能

      $("#sign-up-btn").click(function(){
            var isSubmit = true;
            var inputs = document.getElementsByTagName("input");
            var checkInfo = null;
            for(var i= 0, len=inputs.length; i<len; i++){
                $(inputs[i]).trigger('blur');
                checkInfo = inputs[i].getAttribute("checkinfo");
                if(checkInfo){
                    isSubmit = false;
                    return false;
                }
            }

            if(isSubmit){
                var zc = sy.getCookie("regZendCode");
                if(zc != null){
                    $zendcode = zc;
                }
                $.post(sy.contextPath+"/base/client!doNotNeedSessionAndSecurity_webclientregister.sy",sy.serializeObject($("#sign-up-post")),function(data){
                    if(data.success){
                        $('#reg-in-warning').hide();
                        sy.cookie("IBankUserName",data.msg);
                        location.replace(sy.contextPath + '/loginWebClient/client.jsp');
                    }else{
                        $('#reg-in-warning').show();
                    }
                }, 'json');
            }
      });

        $(document).keydown(function(e){ 
            if (!e){
                e = window.event;  
            }  
            if ((e.keyCode || e.which) == 13) {  
                $("#sign-up-btn").click();  
            }  
        })

jQuery中的keydown()可以实现按键功能，取按键的ASCII码来对应按键。