The instructions here assume that you're already familiar with service workers and the basics of requesting notification permission and sending notifications. Controller is the service worker that intercepts fetch requests.Learn about the ServiceWorkerRegistration. On average, Harris County opens approximately 750 Vote Centers each Election Day. Push notifications in JavaScript are a powerful tool for engaging users and informing them in real-time. We are committed to supporting our Election workers with the training and resources they need to successfully serve Harris County voters. What type of funds can be deposited into the Court Registry? The Worker Adjustment and Retraining Notification (WARN) Act requires businesses to provide notice 60 days in advance of plant closures or mass layoffs. Handle messages when your web app is in the foreground. A food establishment must have a permit from Harris County Public Health to operate.