arduino-to-nodejs/index.html at main · codeadamca/arduino-to-nodejs · GitHub

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<!doctype html>
<html>
    <head>

        <script src='https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.0.4/socket.io.js'></script>

        <style>

            #sample {
                background-color: red;
                width: 300px;
                height: 300px;
            }

        </style>

    </head>
    <body>

        <h1>Communicating from an Arduino to Node.js</h1>

        <div id="sample"></div>

        <script>

        var socket = io();

        socket.on('data', function(data) {

            console.log(data);

            document.getElementById('sample').style.opacity = data+"%";

        });

        </script>

    </body>
</html>