aspnetcore/samples/ChatSample/Views/Home/Index.cshtml

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@{
ViewData["Title"] = "Chat";
}
<div id="chat-area">
<ul id="messages"></ul>
<ul id="users"></ul>
<div class="clear">
</div>
<form id="sendmessage" action="#">
<input type="text" id="new-message" />
<input type="submit" id="send" value="Send" class="send" />
</form>
</div>
<script src="lib/signalr-client/signalr-client.js"></script>
<script>
let transportType = signalR.TransportType[getParameterByName('transport')] || signalR.TransportType.WebSockets;
let connection = new signalR.HubConnection(`http://${document.location.host}/chat`, 'formatType=json&format=text');
connection.on('Send', message => appendLine(message));
connection.onClosed = e => {
if (e) {
appendLine('Connection closed with error: ' + e, 'red');
}
else {
appendLine('Disconnected', 'green');
}
};
connection.start(transportType).catch(err => appendLine(err, 'red'));
document.getElementById('sendmessage').addEventListener('submit', event => {
let data = document.getElementById('new-message').value;
connection.invoke('Send', data).catch(err => appendLine(err, 'red'));
event.preventDefault();
});
function appendLine(line, color) {
let child = document.createElement('li');
if (color) {
child.style.color = color;
}
child.innerText = line;
document.getElementById('messages').appendChild(child);
}
function getParameterByName(name, url) {
if (!url) {
url = window.location.href;
}
name = name.replace(/[\[\]]/g, "\\$&");
var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
results = regex.exec(url);
if (!results) return null;
if (!results[2]) return '';
return decodeURIComponent(results[2].replace(/\+/g, " "));
}
</script>