jsPatterns.chainedMethod.js - add new methods for an class-like object.

jsPatterns.chainedMethod.js

if (typeof Function.prototype.method !== "function") {
    Function.prototype.method = function (name, implementation) {
        this.prototype[name] = implementation;
        return this; // enable chaining function.
    };
}

var Person = function (name) {
    this.name = name;
}.
method('getName', function () {
    return this.name;
}).
method('setName', function (name) {
    this.name = name;
    return this;
});

var p = new Person(),
    name = p.setName('william').getName();
var div = document.createElement('div');
div.className = 'container';
div.style.fontSize = '12px';
div.style.color = 'red';
div.innerHTML = name;
document.body.appendChild(div);