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<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<script>
//定義一個(gè)打印函數(shù)
var $=function(str){
document.write(str);
document.write("<br/>");
}
//定義打印數(shù)組函數(shù)
var _=function(arr){
for(var tmp in arr)
{
$(arr[tmp]);
}
}
//定義一個(gè)學(xué)生對(duì)象
var stu=new Object();
//聲明屬性和行為
stu.id=16;
stu.name='燈幣';
stu.age=function(){
return this.id;
}
//打印學(xué)生的信息
$(stu.id);
$(stu.name);
$(stu.age());//調(diào)用時(shí)要加括號(hào)
stu.sex='女'; //添加新屬性
$(stu.sex); //打印新添加的屬性
//方案2：
function Student(id,name)
{
this.id=id;
this.name=name;
this.getAge=function(){
return this.id;
}
}
//使用
var stu2=new Student(1,'揚(yáng)頓');
$(stu2.id);
$(stu2.name);
$(stu2.getAge());
//再定義一個(gè)屬性
stu2.sex='偽娘';
$(stu2.sex);
//動(dòng)態(tài)語(yǔ)言如何跨域？
Student.prototype.address="阿富汗";
$(stu2.address);
$("stu2_1 begin...");
var stu2_1 =new Student(1,'揚(yáng)頓');
$(stu2_1.id);
$(stu2_1.name);
$(stu2_1.getAge());
$(stu2_1.sex);
$(stu2_1.address); //跨域訪問(wèn)，b對(duì)象訪問(wèn)a對(duì)象的屬性
//在定義
$("stu2_1 end...");
//方案3：json
var stu3={id:1,name:'毛炎炎',getName:function(){return this.name;}};
$(stu3.id);
$(stu3.name);
$(stu3.getName());
//var stu2
//js里面的函數(shù)很多與java里面函數(shù)同名
var str1=new String("abcd")
var str2="asdf";
$(str1.indexOf('c'));
$(str1.charAt(3));
$ (str2.charAt(3));
$("absdf".substring(2,4));
var day=new Date();
$(day.getYear());
$(day.toLocaleString());
//再談數(shù)組
var arr1=new Array(3);
arr1[0]=10;
arr1[1]=20;
arr1[2]=3;
_(arr1);
arr1[3]=4;
//
_(arr1);
//數(shù)組2
var arr2=new Array(234,345,2354,2134,234);
_(arr2);
//數(shù)組3
var arr3=new Array();
arr3[0]=10;
arr3[1]=20;
arr3[2]=3;
_(arr3);
//數(shù)組4.推薦寫(xiě)法
var arr4=[];
arr4[0]=10;
arr4[1]=20;
arr4[2]=3;
_(arr4);
//數(shù)組5.推薦寫(xiě)法
var arr5=[3254,43,532,45,2345];
_(arr5);
function add(i,j){
return i+j;
}
function add(i,j,k){
return i+j+k;
}
$(add(1,2));//參數(shù)個(gè)數(shù)自動(dòng)識(shí)別
var Person=function(id,name)
{
this.id=id;//public
this.name=name;//public
var i=1;//private
function test(){//private
alert('asdf');
}
this.t=function()//public
{
return 1;
}
}
var p=new Person(1,"陳新");
$(p.id);
$(p.name);
$(p.t());//正常訪問(wèn)
$(p.test()); //不能訪問(wèn)
</script>
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<body>
</body>
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