what is "Illegal invocation" error in jquery

in my projecet i am getting ** Illegal invocation** error from Jquery ajax.

when i click the button and dubbing on that time data is not posted from browser to server it showing

i cant understand how fix it my jquery ajax code is.`

$("#review-save").click(function () {
        debugger;
        var productid = $("#productid").text();
        var review_heading = $("#txtreview-heading").val();
        var review_rate = $("#rate-span").text();
        var review_Comment = $("#txtreviewcomment").val();
        var reviewer_name = $("#txtreviewername")
        if (review_heading != "" && review_rate != "" && review_Comment != "" && reviewer_name != "") {
            $.ajax({
                url: '/Product/AddReview',
                method: 'GET',
                dataType:'json',
                data: { productid: productid, 'reviewerId': reviewer_name, reviewPoint: review_rate, },
                contentType: 'application/json; charset=utf-8',
                success: function (data) {
                    alert(data.Status);
                    }

                },
                error: function (err) {
                    alert(err);
                }
            })
        }
        else {
            alert("please fill Every Field");
        }
    })

please give i solution ,how fixed it..