Created
December 6, 2018 21:24
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Simple Subscriber using WebSockets client API
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <style> | |
| body { | |
| font-family: Tahoma, Geneva, sans-serif; | |
| } | |
| div { | |
| display: inline; | |
| } | |
| </style> | |
| <script> | |
| function subscribe() { | |
| var message = document.getElementById('message'); | |
| var channel = document.getElementById('channel').value; | |
| var host = window.document.location.host.replace(/:.*/, ''); | |
| var ws = new WebSocket('ws://' + host + ':8080'); | |
| ws.onopen = function () { | |
| ws.send(JSON.stringify({ | |
| request: 'SUBSCRIBE', | |
| message: '', | |
| channel: channel | |
| })); | |
| ws.onmessage = function(event){ | |
| data = JSON.parse(event.data); | |
| message.innerHTML = data.message; | |
| }; | |
| }; | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <h1>Subscriber</h1> | |
| <input type="text" id="channel" placeholder="Channel (weather, sports etc.)" /> | |
| <button onclick="subscribe()">Subscribe</button> | |
| <div> | |
| <h1>Message:</h1> | |
| <div id="message"></div> | |
| </div> | |
| </body> | |
| </html> |
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