JavaScript 中的所有事物都是對象:字符串、數值、數組、函數...
訪問對象的屬性:objectName.propertyName(對象名.屬性名)
var x=message.length;
訪問對象的方法:objectName.methodName()(對象名.方法名)
var x=message.toUpperCase();
對象的創建:
1.創建構造器
function person(firstname,lastname,age,eyecolor)
{
this.firstname=firstname;
this.lastname=lastname;
this.age=age;
this.eyecolor=eyecolor;
}
2.利用構造器創建對象
var myFather=new person("Bill","Gates",56,"blue");
var myMother=new person("Steve","Jobs",48,"green");
for-in循環:
var person={fname:"Bill",lname:"Gates",age:56};
for (x in person)
{
txt=txt + person[x];
}
//輸出 Bill Gates 56