$.ajax(
{
type: "POST",
url: "/MemberComment.aspx/GetOrderToBeCommentCount",
success: function(result) {
//ToDo:
}
)

$.ajax(
{
type: "POST",
contentType: "application/json",
url: "/MemberComment.aspx/GetOrderToBeCommentCount",
data:"{a:'a'}",
success: function(result) {
//ToDo:
}
)