Several ways of JS object-oriented

First mode: Factory mode

var lev=function () {return " home of the script ";};

function Parent () {var child = new Object (); Child.name= " script "; Child.age= "4"; Child.lev=lev; return child; };

var x = Parent ();

alert (x.name);

Alert (X.lev ());

Second mode: constructor mode

var lev=function () {return " home of the script ";};

function Parent () {this.name= " script "; This.age= "30"; This.lev=lev; };

var x =new Parent ();

alert (x.name);

Alert (X.lev ());

Third mode: Prototype mode

var lev=function () {return " home of the script ";};

function Parent () {};

Parent.prototype.name= " Bruce Lee ";

Parent.prototype.age= "30";

Parent.prototype.lev=lev;

var x =new Parent ();

alert (x.name);

Alert (X.lev ());

Fourth mode: Mixed constructors, prototype mode (recommended)

function Parent () {this.name= " script "; this.age=4; };

Parent.prototype.lev=function () {return this.name;};

var x =new Parent ();

Alert (X.lev ());

Fifth mode: Dynamic prototyping mode

function Parent () {this.name= " script "; this.age=4; if (typeof parent._lev== "undefined") {

Parent.prototype.lev=function () {return this.name;} Parent._lev=true; }

};

var x =new Parent ();

Alert (X.lev ());

Several ways of JS object-oriented