数组-jsp

// JavaScript Document

var scores=new Array();

document.write("<br/>scores.length:"+scores.length);

//scores[0]=100;

document.write("<br/>scores.length:"+scores.length);

var info=new Array("zs","boy",190.5,9);//定义数组初始化

document.write("<br/>info.length:"+info.length);

document.write("<br/>info:"+info);

var xm=new Array(31);//只有一个整形变量，定义袁术个数

document.write("<br/>xm.length:"+xm.length);

//数组直接量

var week=["sun","mon","tue","wed","thu","fri","sat"];

document.write("<br/>week.length:"+week.length);

//遍历

document.write("<br/>");

for(i=0;i<week.length;i++)

{

document.write(week[i]+"---");

}

week.splice(2,1);//删除了星期三

document.write("<br/>");

for(i=week.length-1;i>=0;i--)

{

document.write(week[i]+"---");

}

document.write("<br/>"+week.join("--"));

document.write("<br/>"+week.reverse().join("--"));

var sweek=week.sort();//默认升序

sweek=week.sort().reverse();//升序后再倒序，就变成了降序

document.write("<br/>"+sweek.join("--"));