JSON Post with Customized HTTPHeader Field

What you posted has a syntax error, but it makes no difference as you cannot pass HTTP headers via $.post().

Provided you're on jQuery version >= 1.5, switch to $.ajax() and pass the headers (docs) option. (If you're on an older version of jQuery, I will show you how to do it via the beforeSend option.)

$.ajax({
    url: 'https://url.com',
    type: 'post',
    data: {
        access_token: 'XXXXXXXXXXXXXXXXXXX'
    },
    headers: {
        Header_Name_One: 'Header Value One',   //If your header name has spaces or any other char not appropriate
        "Header Name Two": 'Header Value Two'  //for object property name, use quoted notation shown in second
    },
    dataType: 'json',
    success: function (data) {
        console.info(data);
    }
});

if one wants to use .post() then this will set headers for all future request made with jquery

$.ajaxSetup({
    headers: {
        'Content-Type': 'application/json',
        'Accept': 'application/json'
    }
});

then make your .post() calls as normal.

I tried as you mentioned, but only first parameter is going through and rest all are appearing in the server as undefined. I am passing JSONWebToken as part of header.

.ajax({
    url: 'api/outletadd',
    type: 'post',
    data: { outletname:outletname , addressA:addressA , addressB:addressB, city:city , postcode:postcode , state:state , country:country , menuid:menuid },
    headers: {
        authorization: storedJWT
    },
    dataType: 'json',
    success: function (data){
        alert("Outlet Created");
    },
    error: function (data){
        alert("Outlet Creation Failed, please try again.");        
    }

    });