<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>ntfy.sh: EventSource Example</title> <meta name="robots" content="noindex, nofollow" /> <style> body { font-size: 1.2em; line-height: 130%; } #events { font-family: monospace; } </style> </head> <body> <h1>ntfy.sh: EventSource Example</h1> <p> This is an example showing how to use <a href="https://ntfy.sh">ntfy.sh</a> with <a href="https://developer.mozilla.org/en-US/docs/Web/API/EventSource">EventSource</a>.<br/> This example doesn't need a server. You can just save the HTML page and run it from anywhere. </p> <button id="publishButton">Send test notification</button> <p><b>Log:</b></p> <div id="events"></div> <script type="text/javascript"> const publishURL = `https://ntfy.sh/example`; const subscribeURL = `https://ntfy.sh/example/sse`; const events = document.getElementById('events'); const eventSource = new EventSource(subscribeURL); // Publish button document.getElementById("publishButton").onclick = () => { fetch(publishURL, { method: 'POST', // works with PUT as well, though that sends an OPTIONS request too! body: `It is ${new Date().toString()}. This is a test.` }) }; // Incoming events eventSource.onopen = () => { let event = document.createElement('div'); event.innerHTML = `EventSource connected to ${subscribeURL}`; events.appendChild(event); }; eventSource.onerror = (e) => { let event = document.createElement('div'); event.innerHTML = `EventSource error: Failed to connect to ${subscribeURL}`; events.appendChild(event); }; eventSource.onmessage = (e) => { let event = document.createElement('div'); event.innerHTML = e.data; events.appendChild(event); }; </script> </body> </html>