Windows 10 JavaScript Example which Simply Opens Native Calendar/Mail/People Applications without any context

openother.js

window.addEventListener("DOMContentLoaded", (ev) => {
    if (typeof Windows !== 'undefined') {
        document.getElementById("calendar").addEventListener("click", () => {
            Windows.ApplicationModel.Appointments.AppointmentManager.showTimeFrameAsync(new Date(Date.now()), 1);
        });
        document.getElementById("mail").addEventListener("click", () => {
            Windows.System.Launcher.launchUriAsync(new Windows.Foundation.Uri("mailto:"));
        });
        document.getElementById("people").addEventListener("click", () => {
            Windows.System.Launcher.launchUriAsync(new Windows.Foundation.Uri("ms-people:"));
        });
    } else {
        document.getElementsByTagName("body")[0].innerHTML = "Load within Windows Web App.";
    }
});