Superlightweight event system for javascript. Easy to use just in the client, easy to use on the server and seamless communication between both. If you like to create event based apps, this is for out.

Look at the example to see how easy it works, or read more here http://nunt.onezerozeroone.com/

Installing it

In node

npm install nunt

In the browser

<script type="text/javascript" charset="utf-8" src="js/nunt.js"></script>

Basics

You basically use it like this:

// listen
nunt.on("foo", function(event){
    console.log("hello " + event.name);
});

// send
nunt.send("foo", {name: "bar"});

For more information, go to the documentation site or read the following examples. There are even more examples in the repo.

Using it on the browser

If you want to use it in the browser, just add the nunt.js file to your scripts and begin to use it:

<script type="text/javascript" charset="utf-8" src="js/nunt.js"></script>
<script type="text/javascript" charset="utf-8">

    (function(nunt){

        // listen to events
        nunt.on(nunt.READY, ready);
        nunt.on("foo.bar", update);

        function ready(e) {
            nunt.send("foo.bar", {message: "Hello from the browser"});
        }

        function update(event) {
            // when we get the message, we just display it
            console.log(event.message);
        }

    })(nunt);

</script>

Using it with node and the browser

The power of nunt is strongest when used with node. It allows your app to communicate with the same type of events no matter if the events originate from the server or the client. To use it for client/server communication, socket.io is required. Just run

npm install socket.io 

Here is a short example to run with node (more in the example folders):

var nunt = require('nunt');

// this part is only required if you want to host a web app, otherwise there is no need for an http server
var http = require('http');
var fs = require('fs');

// the web server
var server = http.createServer(function (req, res) {
    fs.readFile('index.html', function(err, fileContent) { 
        res.writeHead(200, {'Content-Type': 'text/html'});
        res.end(fileContent);
    });
}).listen(1337);

// start nunt
nunt.init({ server: server });

// everytime a client connects, we send a greeting
nunt.on(nunt.CONNECTED, function(e) {
    nunt.send("event.from.server", {message: "Hello Browser!"});
});

On the browser, you include nunt hosted by your app automatically (adding socket.io as well):

<script type="text/javascript" charset="utf-8" src="/socket.io/socket.io.js"></script>
<script type="text/javascript" charset="utf-8" src="/nunt/nunt.js"></script>
<script type="text/javascript" charset="utf-8">

    (function(nunt){

        // listen to events
        nunt.on("event.from.server", update);

        function update(event) {
            // when we get the message from the server, we just display it
            console.log(event.message);
        }

    })(nunt);

</script>

With express

Nunt can also be used with express, making the server code a little smaller:

var nunt = require('nunt');
var http = require('http');
var express = require('express');
var app = express();
var server = http.createServer(app);

// this has to be initiated first, before we can use the middleware
nunt.init({ server: server });

app.configure(function(){
    app.use(nunt.middleware());
    app.use(express.static(__dirname + '/public'));
});

// everytime a client connects, we send a greeting
nunt.on(nunt.CONNECTED, function(e) {
    nunt.send("event.from.server", {message: "Hello Browser! I just sent this from the server!"});
});

server.listen(1337);

Compability

Since nunt 1.3.0, the client script for using with node is integrated to the base nunt script. This means that the only needed include is nunt.js on the client.

The future:

The base of nunt won't change, but I like to test to convert the events in node to real node events, as opposed to todays custom event emitter.