[SOLVED] How can I tell if the browser supports notifications

It should already include it. This is the initialization of the features map from the client passed in together with the first load request.

 var data = {
 hash: location.hash.substr(1),
 browserSize: this.browserSize,
 screenSize: { width: screen.width, height: screen.height },
 os: this.platform.getSystemName(),
 device: this.platform.getDeviceType(),
 browser: this.platform.getBrowserName(),
 version: this.platform.getBrowserVersion(),
 fullScreen: window.fullScreenApi ? window.fullScreenApi.isFullScreen() : false,
 features: {
 webSocket: ("WebSocket" in window),
 arrayBuffer: ("ArrayBuffer" in window),
 notification: ("Notification" in window),
 geolocation: ("geolocation" in navigator),
 localStorage: ("Storage" in window),
 speechSynthesis: (window.speechSynthesis) != null,
 fullScreen: window.fullScreenApi ? window.fullScreenApi.supportsFullScreen : false,
 speechRecognition: (window.speechRecognition || window.webkitSpeechRecognition || window.mozSpeechRecognition) != null,
 },
 language: language
 };