mchain.js

gistfile1.js

var obj = {
	value: 1,
	increment: function () {
		this.value += 1;
		return this;
	},
	add: function (v) {
		this.value += v;
		return this;
	},
	shout: function () {
		alert(this.value);
	}
};

document.writeln(obj.increment().add(3).shout());
document.writeln(obj.increment());
document.writeln(obj.add(3));
document.writeln(obj.shout());