Javascript class definition template

class_def.js

var Thing = (function() {

	this.public_property = "Public property";

	var private_property = "Private property";

	function Thing(data) {
		this.datum1 = data.datum1;
		this.datum3 = data.datum2;
	}

	Thing.prototype.public_method1 = function() {
		return "Public method 1 - " + this.datum1;
	};

	Thing.prototype.public_method2 = function() {
		return "Public method 2 - " + private_method1();
	};

	function private_method1() {
		return "Private method 1";
	}

	function private_method2() {
		return "Private method 2";
	}
	
	function private_method3() {
		return "Private method 3 - " + this.datum2;
	}
    
    return Thing;
	
})();

/* Example usage */
var thing = new Thing( { "datum1":"my data 1", "datum2":"my data 2" } );
console.log(thing.public_method1());
console.log(thing.public_method2());
console.log(public_property);