node-aop

aop.js
========
aop.js is a simple aop, can be run inside Node.js or in a browser.

##install
In a browser
``html

`
In Node, use NPM to install:
`bash
npm install node-aop
`
Note that the package name is node-aop; the name “aop” was already taken.

##Usage
`html
var aop = require("node-aop");// Node.js require. Use window.aop in browser

var obj = {
url:"",
get : function(key){
return this["key"];
},
set : function(key, value){
this["key"] = value;
}
};

var h1 = aop.before(obj, "set", function(key, value){
value += " before-1 ";
return [key, value]; // modify the parameters,
});

var h2 = aop.before(obj, "set", function(key, value){
value += " before-2 ";// do not modify the parameters
});
// before
obj.set("url", "http://mojijs.com");
console.log( obj.get("url") ); // http://mojijs.com before-1


var h3 = aop.after(obj, "get", function(value){
value += " after-1 "; // do not modify the return value
});

var h4 = aop.after(obj, "get", function(value){
value += " after-2 ";
return value; // modify the return value
});

// after
console.log( obj.get("url") ); //http://mojijs.com before-1 after-2



// rmmove
h1.remove();
h4.remove();

obj.set("url", "http://google.com");
console.log( obj.get("url") ); // http://google.com
``