/*------日期对象------*/

      document.write('<br/>日期对象<br/>');

//    获取当前日期

      var date = new Date();

      document.write('<br/>date:'+date);

//    获取年份

      document.write("<br/>"+date.getFullYear())

      //获取当前时间戳

      document.write("<br/>时间戳:"+date.getTime());

      //创建自定义日期

      date.setFullYear(2016,1,1);

      document.write("<br/>自定义的时间:"+date);

  /*------数组对象------*/

//     数组合并

       var a =["Hello","world"];

       var b = ["lin","iw"];

       var c =a.concat(b);

       document.write("<br/>数组合并:"+c);

//     数组排序

       var arry = ["a","b","c","b","a","f","e"];

       var numArray = [21,4,1,5,25,9,38,4];

       //升降序

       function compareFunc(a,b){

       	return b-a;

       }

       document.write("<br/>数组排序"+arry.sort());

       document.write("<br/>数组升降序排序"+numArray.sort(compareFunc));

//     数组追加值

       arry.push("zhuijia");

       document.write("<br/>数组追加"+arry);

//     数组翻转

       document.write("<br/>数组翻转"+numArray.reverse());

  /*------Math对象------*/

     document.write("<br/>四舍五入:"+Math.round(2.5));

//   随机数

     document.write("<br/>随机数:"+parseInt(Math.random()*10));

   //求最大值

     document.write("<br/>求最大值:"+Math.max(1,2.4325,525,53,5))

    //求绝对值

     document.write("<br/>求绝对值:"+Math.abs(-10));