node-observer

Observer pattern implementation

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Readme

Observer

This is an observer pattern module

Install

npm install node-observer

Example

Main file: app.js
```app.js "use strict";
var observer = require("node-observer"); var hello = require("./hello");
observer.subscribe(this, "HELLO", function(who, data) {
console.log(data);
});
hello.send();
File: hello.js

```hello.js
"use strict";

var observer = require("node-observer");

var Hello = function() { };

Hello.prototype.send = function() {
	observer.send(this, "HELLO", "hello world!!!");
};

module.exports = new Hello();

Run
node app.js

API

subscribe(object, event, callback)

object:object, event:string, callback:function
subscribe event

unsubscribe(object, event)

object:object, event:string
unsubscribe event

send(object, event, data)

object:object, event:string, data:object
send event 'event' with data 'data'

Browser version

Under client directory there is a browser version of library. Added script tag in your html file. See the example below.
File index.html ```index.html Javascript observer pattern example: see the result in console
File app.js
```app.js
$(function() {
	Observer.subscribe(this, 'HELLO', function(who, data) {
		console.log(data);
	});
});

File mylib.js ```mylib.js (function(window) {
var getInstance = function() {
	Observer.send(this, 'HELLO', 'Hello world!!!');
};

    if (typeof(mylib) === 'undefined') {
	window.mylib = getInstance();
    } else {
        console.log('mylib already defined.');
    }
})(window); ```

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