Service Workers

Create service workers for offline support

AdvancedTopic: Browser API
Back

JavaScript Service Workers Program

This program helps you to learn the fundamental structure and syntax of JavaScript programming.

Try This Code
if ('serviceWorker' in navigator) {
    navigator.serviceWorker.register('/sw.js')
        .then(reg => console.log('Registered'))
        .catch(err => console.error('Error:', err));
}
Output
Registered

Understanding Service Workers

Service Workers enable offline functionality.

Note: To write and run JavaScript programs, you need to set up the local environment on your computer. Refer to the complete article Setting up JavaScript Development Environment. If you do not want to set up the local environment on your computer, you can also use online IDE to write and run your JavaScript programs.

Table of Contents