JavaScript学习笔记:创建对象和构造类

 script type="text/javaScript"   var newObject=new Object();   //创建一个对象newObject.firstName="frank";//增加一个firstName属性newObject.sayName=function(){alert(this.firstName);} //添加一个sayName方法//调用sayName方法//newObject.sayName();//newObject["sayName"]();var FirstName=newObject["firstName"];var whatFunction;//if(whatVolume==1){//whatFunction="sayName";//}else if(whatVolume==2){//whatFunction="sayLoudly"//}//newObject[whatFunction]();function sayLoudly(){alert(this.firstName.toUpperCase());}newObject.sayLoudly=sayLoudly;//另一种方式添加方法newObject["sayLoudly"](); /script

   function sayLoudly(){alert(this.firstName.toUpperCase());}var newObject={firstName:"frank",sayName:function(){alert(this.firstName);},sayLoudly:sayLoudly};//也可以这样   var newObject={firstName:"frank",sayName:function(){alert(this.firstName);},sayLoudly:sayLoudly,lastName:{lastName:"ziggy",sayName:function(){alert(this.lastName);}}};newObject.lastName.sayName();

   function sayLoudly(){alert(this.name.toUpperCase());}   function sayName(){   alert(this.name);   }var newObject={name:"frank",sayName:sayName,sayLoudly:sayLoudly,lastName:{name:"ziggy",sayName:sayName}};newObject.lastName.sayName();

   function newClass(){alert("constructor");this.firstName="frank";this.sayName=function(){alert(this.firstName);}   // return this;}//var nc=newClass();var nc=new newClass();//nc.firstName="ziggy";  is oknc.sayName();

   function newClass(){ this.firstName="frank";   }newClass.prototype.sayName=function(){alert(this.firstName);}var nc=new newClass();nc.firstName="ziggy";nc.sayName();var nc2=new newClass();nc2.sayName();