function contactTest() { var contact = new mozContact(); contact.init({name: "Tom"}); var request = navigator.mozContacts.save(contact); request.onsuccess = function() {alert("success");}; request.onerror = function() {alert("error")}; } function deviceStorageTest() { var deviceStorage = navigator.getDeviceStorage('pictures'); deviceStorage.enumerateEditable(); } document.getElementById('contacts').onclick = contactTest; document.getElementById('device').onclick = deviceStorageTest;