一、Array数组对象
1、Array对象：使用单独的变量名来存储一系列的值。
2、数组的创建：例：var myArray=["Hello","yeleven","yeleven2"];
3、数组的访问：通过指定数组名以及索引号码，你可以访问某个特定的元素
4、数组常用方法：concat():合并数组
sort():排序
push():末尾追加元素
reverse():数组元素翻转
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script>
// var a = ["hello","world"];
// var b = ["yeleven","yeleven2"];
// var c = a.concat(b);
// document.write(c);
// var a = ["a","c","f","b","d","e"];
// document.write(a.sort());
// var a = ["a","c","f","b","d","e"];
// a.push("Z");
// document.write(a);
var a = ["c","b","a"];
a.reverse();
document.write(a);
</script>
<div id="timetxt"></div>
</body>
</html>二、Math对象
1.Math对象：执行常见的算数任务
2.常用方法：round():四舍五入
random():返回0~1之间的随机数
max():返回最高值
min():返回最小值
abs():返回绝对值
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> </head> <body> <script> // document.write(Math.round(2.5)); // document.write(parseInt(Math.random()*10)); // document.write(Math.max(1,4,7,3,22,17,44)); // document.write(Math.min(1,2,5,3,9)); document.write(Math.abs(-10)); </script> <div id="timetxt"></div> </body> </html>
原文地址：http://11317783.blog.51cto.com/11307783/1793807
