I'm attempting to write a basic html page to control hardware on the
BeagleBone Black. The HTML file looks like this:
<!DOCTYPE html>
<html>
<head>
<script src="/socket.io/socket.io.js"></script>
<script src="http://code.jquery.com/jquery-2.1.1.min.js";></script>
<script>
var socket = io.connect();
socket.on('ledstatus', function (data) {
console.log(data);
$('body').css('background-color', data);
});
function ledOn(){
socket.emit('led', 'on');
}
function ledOff(){
socket.emit('led', 'off');
}
</script>
</head>
<body>
<input type="button" name="on" id="onButton" value="on"
onClick="ledOn();">
<input type="button" name="off" id="offButton" value="off"
onClick="ledOff();">
</body>
</html>
And the .js file looks like this:
var app = require('http').createServer(handler);
var io = require('socket.io').listen(app);
var fs = require('fs');
var bb = require('bonescript');
app.listen(8090);
console.log('Server running on: http://' + bb.getPlatform().ipAddress +
':8090');
bb.pinMode('USR3', 'out');
bb.digitalWrite('USR3', 0);
function handler (req, res) {
fs.readFile('index.html',
function (err, data) {
if (err) {
res.writeHead(500);
return res.end('Error loading index.html');
}
res.writeHead(200);
res.end(data);
});
}
io.sockets.on('connection', function (socket) {
socket.on('led', function (data) {
console.log(data);
if (data == 'on') {
bb.digitalWrite('USR3', 1);
socket.emit('ledstatus', 'green');
socket.broadcast.emit('ledupdate', 'green');
}
else {
bb.digitalWrite('USR3', 0);
socket.emit('ledstatus', 'red');
socket.broadcast.emit('ledupdate', 'red');
}
});
});
And it works just fine. The problem is that my application will not have
internet access which makes this line problematic:
<script src="http://code.jquery.com/jquery-2.1.1.min.js";></script>
So I downloaded jquery-2.1.1.min.js to the same directory as the HTML and
.js files, and changed the above line to:
<script src="jquery-2.1.1.min.js"></script>
And it stops working, and I get the following errors when I use Chrome's
inspect element tool:
Uncaught SyntaxError: Unexpected token <
Uncaught ReferenceError: $ is not defined
Anybody know what's going on here?
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