ways to creat an object in javascript

//ways to creat an object in javascript
function log(s){    console.log(s);}

1.the easyest way: literals    var person={    name:'windylcx',//here the comma is requried    sex:'male'//no comma }also we can use the string as the variable name(properties) ,it's the same.var person={    'name':'windylcx',    'sex':'male'}once we creat the obj,we can acess its properties like this:log(person.name) or log(person['name']);//in addtion,we can also define the method of an object//just set the properties(variable) the value of a functionvar person={    'name':'windylcx',    'sex':'male',    'getName':function(){        return this.name;    }}log(person.getName());//to creat an empty objectvar empty_obj={};// add some properties into the objempty_obj.name='windylcx';empty_obj.getName=function(){return this.name};//2. use the new Object;obj=new Object();//or obj=new Object;//add propertiesobj.name='lcw';obj.getName=function(){return this.name;};//console.log(obj.getName());

//3. use the Function Object;//first define a functionfunction classA(name){    this.name=name;// and then use the "this" key word to keep the object's properties;    this.getName=function(){        return this.name;    }    this.setName=function(name){        this.name=name;    }        }//last use the new key word to creat a new Object;var obj_a1=new classA(500);/*when the function is invocated by a "new" key word, it means to creat an object ,actually it will first do the following things: */obj_a1.prototype.constructor=classA; /*"When a function object is created, it is given a prototype member which is an object containing a constructor memberwhich is a reference to the function object"actually this function(constructor) return "this"; so when you use return statment in the constructor,it will not creat an  obj after you use "new" to creat an obj,it just as a ordinary function invocation; eg.*/    function classC(){        this.name=name;        this.getName=function(){            return this.name;        }        this.setName=function(name){            this.name=name;        }        return {a:'a'};    }//and a better way is to use the prototype ,so that we can reduce the memory's useage.//because we can just keep only one code as the common code. function classC(){        this.name=name;    }classC.prototype.getName=function(){return this.name;};