js_array

<script type="text/javascript" charset="utf-8">
/*
   js数组的声明与应用
   1.数组的作用
   2.如何声明数组
       a.快速声明数组
    var 数组名=[元素1,元素2,.....];
    b.声明
    使用Array对象
    var arr=new Array("成员1","成员2",....);
    var arr=new Array(10);
    3.遍历数组
    for()
    4.数组的处理(内置处理方法)
 */
var arr=["aaa","aaaaa","aa","a","aaaaaaa","b","cccccccc"];

//arr.unshift("hello");
//arr.shift();
//document.write(arr);


/*arr.push("wwww","yyyy");

arr.pop();
arr.pop();

document.write(arr);
document.write(arr.length);
*/

/*arr.sort(function sort_1(a,b){
    if(a.length>b.length){
        return -1;
    }else if(a.length==b.length){
        return 0;
    }else{
        return 1;
    }
});
*/
//document.write(arr);

//var arr=new Array("111","2222","3333");
//var arr=[1,5,3,4,2,9,8,7];
//arr.sort(function(a,b){
//        if(a>b){
//            return -1;
//            }
//        if(a==b){
//        return 0;
//        }
//        if(a
//        return 1;
//        }
//        });
//document.write(arr);

/*for (var i=0;i
    document.write(arr[i]+"");
}*/

/*function MyArray(){
    this.length=arguments.length;

    for (var i=0; i
        this[i]=arguments[i];
    }

    this.sort=function(){

    }
    this.pop=function(){
    }
    this.push=function(){
    }
}
var arr=new MyArray("aaaa","bbbb","cccc");

alert(arr.length);
arr[1]="xxxxx";

alert(arr[1]);
*/


/*var names=["张三","李四","王五"];
var tems=["abc",10,12.34,true];

var arrs=[["111111","22222"],
    ["aaa","bbbb"],
    ["3333","ccccc"]];


alert(arrs[1][1]);
*/
/*
var p=new Object(){
    p.name="zhangsan";
    p.age=10;
    p.sex="nan";
    }*/

//var p={name:"zhangsan",age:10,sex:"nan"};
//
//alert(p.name);
//alert(p["name"]);
/*
   json
   {属性1:值1,属性2:值2,,,}
   */
</script>