JavaScript 使用简略语法创建对象的代码
JavaScript 使用简略语法创建对象
window.onload = function(){
AppendMembersToObject();
SimpleSyntaxToCreateObject();
}
function AppendMembersToObject()
{
var testName = "AppendMembersToObject";
WriteStart(testName);
// 创建一个对象
var person = new Object();
// 给对象添加属性(public)
person.Name = "lipei";
person.Sex = "boy";
person.Age = "24";
// 给对象添加方法(public)
person.toString = function(){
//此处用person或this都可以,此时this指代person对象。
return str = "Name:" + this.Name + ",Sex:" + this.Sex + ",Age:" + this.Age;
}
WriteLine("person.Name : " + person.Name);
WriteLine("person.toString() : " + person.toString());
WriteEnd();
/*
根据结果可知:JavaScript 中可在对象创建后,为对象添加成员(属性、方法等)。
*/
}
function SimpleSyntaxToCreateObject()
{
var testName = "SimpleSyntaxToCreateObject";
WriteStart(testName);
// 使用简略语法创建对象
var computer = {
Cpu : "酷睿2P系列",
MainBoard : "华硕ER",
Keyboard : "双飞燕",
toString : function(){
return str = "Cpu:" + this.Cpu + ",MainBoard:" + this.MainBoard + ",Keyboard:" + this.Keyboard;
}
};
WriteLine("computer.MainBoard : " + computer.MainBoard);
WriteLine("computer.toString() : " + computer.toString());
WriteEnd(testName);
/*
根据结果可知:JavaScript简略语法可只能识别变量冒号后的类型,并据此定义变量的类型。
*/
}
/*************************Test Tools**************************/
function WriteLine(str)
{
document.write(str + "
");
}
function WriteStart(str)
{
WriteLine("TEST : " + str + "
");
}
function WriteEnd()
{
WriteLine("
");
}
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]