如何通过ajax传递json数据？

Question

I am working a visual studio 2012 MVC program.

I use ajax to send data to a controller and wish the controller returns a body of html. the data is in json format. the data is a string name and decimal TotFees.

I found that the parameters value in the public ActionResult ImmPay(string Name) in the controller are always null. Finally I tried just to pass name, but the value of name in the controller side is still null.

what is wrong in my code, and how to solve the problem? Thank you.

View:
    function ImmPay()
    {
        var name = "ASP";
        var TotFees = 100.01;       

        //var dd = "{\'name\':\'" + name + "\', \'TotFees\':\'" + TotFees + "\'}"; 
        //var dd = "{\'name\':\'" + name + "\', \'TotFees\':\'" + TotFees + "m\'}";

        dd = "{\'b\':\'" + b + "\'}";
        dd = JSON.stringify(dd);
        $.ajax({
            url: '@Url.Action("ImmPay", "Consult")',
            type: 'GET',
            async: true,
            data: dd,
            contentType: 'application/json',
            context: document.body,
            success: function (response, textStatus, jqXHR) {
                $("#dialog-immpay").html(response);
                $("#dialog-immpay").dialog("open");
            },
            error: function (jqXHR, textStatus, errorThrown) {
                alert(textStatus);
            },
            complete: function () {
                ;
            }
        });

    }

Controller:
        public ActionResult ImmPay(string Name)
        {
        do something here
        }

Answer 1

JSON.stringify接受一个对象或数组并将其转换为JSON，因此您可以将数据构建到一个对象中并像这样对其进行字符串化

dd = JSON.stringify({b: b});