Adding form data to Google Sheets

Google-Sheets-Form-Data-Submit.js

$.fn.serializeObject = function() {
    var o = {};
    var a = this.serializeArray();
    $.each(a, function() {
        if (o[this.name]) {
            if (!o[this.name].push) {
                o[this.name] = [o[this.name]];
            }
            o[this.name].push(this.value || "");
        } else {
            o[this.name] = this.value || "";
        }
    });
    return o;
};
var $form = $('#contactForm'),
    url = 'https://script.google.com/macros/s/AKfycbyGHGAnjom4IaAsoBBaC3QqUpVaDIcLmM_Uil-k_chH64bDyBk/exec';

function handleResponse(data) {
    console.log('Ajax successful');
    $('#contactForm').slideUp("fast");
    $('#result').slideDown('slow');
}
$('#form-submit').on('click', function(e) {
    e.preventDefault();
    $('#form-submit').text("Processing Data").attr("disabled", "disabled").css("backgroundColor", "#00548e");
    var jqxhr = $.ajax({
        url: url,
        method: "GET",
        dataType: "json",
        data: $form.serializeObject(),
        success: handleResponse
    });
});