Javascript call to ASP.NET Page Method working on IE but not on Chrome / Firefox

Question

I have the following code in an ASPX page that, when a PayPal icon is clicked, connects with a Page Method and retrieves the PayPal token of a session. When this is executed in IE, it works perfectly, but when it is executed in Chrome or Firefox, the $.ajax call of jQuery returns immediately an error of code 0.

$(document).ready(function () {
            $("input.PayPal").click(function () {
                $.ajax({
                    type: "POST",
                    url: "MyCurrentPage.aspx/PayPal",
                    data: "{IdRecibo : " + $(this).attr("data-value") + "}",
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    success: function (result) {
                        if (result.d.Result == "Success") {
                            window.location.href = result.d.Redirect;
                        }
                        else
                            alert("El servicio de PayPal está temporalmente deshabilitado.");
                    },
                    error: function (xhr, ajaxOptions, thrownError) {
                        alert(xhr.status);
                        alert(thrownError);
                    }
                });
            });

Answer 1

A slight change of code solves the problem with Chrome. It looks like the JSON response of the ASP.NET Page Method is not correctly parsed if return false; is not the last part of the $.ajax call.

This is the working code:

    $("input.PayPal").click(function () {
        $.ajax({
            type: "POST",
            url: '<%= Page.Request.Url.AbsolutePath + "/PayPal" %>',
            data: JSON.stringify({ IdRecibo: $(this).attr("data-value") }),
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            cache: "false",
            timeout: 10000,
            success: function (result) {
                if (result.d.Result == "Success") {
                    window.location.href = result.d.Redirect;
                }
                else
                    alert("El servicio de PayPal está temporalmente deshabilitado.");
            },
            error: function (xhr, ajaxOptions, thrownError) {
                alert(xhr.status);
                alert(thrownError);
            }
        });
        return false;
    });