A brief discussion on several common JS class definition methods _javascript skills

Method 1 Object Direct Quantity

var obj1 = {
 v1: "",
 get_v1:function () {return
  this.v1;
 },
 set_v1:function (v) {
  this.v1 = v;
 }
};

Method 2 defines a function object

var Obj = function () {
 var v1 = "";
 THIS.GET_V1 = function () {return
  this.v1;
 };
 THIS.SET_V1 = function (v) {
  this.v1 = v;
 }
};

Method 3 Prototype Inheritance

var Obj3 = new Function ();
Obj3.prototype = {
 v1: "",
 get_v1:function () {return
  this.v1;
 },
 set_v1:function (v) {
   
    this.v1 = v;
 }
;
   

Method 4 Factory mode

function Loadobj () {
 var tmp = new Object ();
 TMP.V1 = "";
 TMP.GET_V1 = function () {return
  tmp.v1;
 };
 TMP.SET_V1 = function (v) {
  tmp.v1 = v;
 };
 return tmp;
}

OBJ1.SET_V1 (' Hello1 ');
Alert (OBJ1.GET_V1 ());

var obj2 = new Obj ();
OBJ2.SET_V1 (' Hello2 ');
Alert (OBJ2.GET_V1 ());

var obj3 = new Obj ();
OBJ3.SET_V1 (' Hello3 ');
Alert (OBJ3.GET_V1 ());

var obj4 = Loadobj ();
OBJ4.SET_V1 (' Hello4 ');
Alert (OBJ4.GET_V1 ());

alert (obj1);
alert (OBJ2);
alert (OBJ3);
alert (OBJ4);

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