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106 lines
3.8 KiB
HTML
106 lines
3.8 KiB
HTML
<html>
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<head>
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<title>Online visitors MVC example</title>
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<style>
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body {
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margin: 0;
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font-family: -apple-system, "San Francisco", "Helvetica Neue", "Noto", "Roboto", "Calibri Light", sans-serif;
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color: #212121;
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font-size: 1.0em;
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line-height: 1.6;
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}
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.container {
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max-width: 750px;
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margin: auto;
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padding: 15px;
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}
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#online_visitors {
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font-weight: bold;
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font-size: 18px;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<span id="online_visitors">1 online visitor</span>
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</div>
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<!-- the message's input -->
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<input id="input" type="text" />
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<!-- when clicked then a websocket event will be sent to the server, at this example we registered the 'chat' -->
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<button id="sendBtn" disabled>Send</button>
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<!-- the messages will be shown here -->
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<pre id="output"></pre>
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<!-- import the iris client-side library for browser from a CDN or locally.
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However, `neffos.(min.)js` is a NPM package too so alternatively,
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you can use it as dependency on your package.json and all nodejs-npm tooling become available:
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see the "browserify" example for more-->
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<script src="https://cdn.jsdelivr.net/npm/neffos.js@latest/dist/neffos.min.js"></script>
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<script type="text/javascript">
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const wsURL = "ws://localhost:8080/websocket"
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var outputTxt = document.getElementById("output");
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function addMessage(msg) {
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outputTxt.innerHTML += msg + "\n";
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}
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async function runExample() {
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try {
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const conn = await neffos.dial(wsURL, {
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default: { // "default" namespace.
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_OnNamespaceConnected: function (nsConn, msg) {
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if (nsConn.conn.wasReconnected()) {
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addMessage("re-connected after " + nsConn.conn.reconnectTries.toString() + " trie(s)");
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}
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let inputTxt = document.getElementById("input");
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let sendBtn = document.getElementById("sendBtn");
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sendBtn.disabled = false;
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sendBtn.onclick = function () {
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const input = inputTxt.value;
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inputTxt.value = "";
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nsConn.emit("OnChat", input);
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addMessage("Me: " + input);
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};
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addMessage("connected to namespace: " + msg.Namespace);
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},
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_OnNamespaceDisconnect: function (nsConn, msg) {
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addMessage("disconnected from namespace: " + msg.Namespace);
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},
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OnChat: function (nsConn, msg) { // "OnChat" event.
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console.log(msg);
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addMessage(msg.Body);
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},
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OnVisit: function (nsConn, msg) {
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const newCount = Number(msg.Body); // or parseInt.
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console.log("visit websocket event with newCount of: ", newCount);
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var text = "1 online visitor";
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if (newCount > 1) {
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text = newCount + " online visitors";
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}
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document.getElementById("online_visitors").innerHTML = text;
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},
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}
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});
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conn.connect("default");
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} catch (err) {
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console.log(err)
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}
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}
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runExample();
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</script>
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</body>
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</html> |