<script type="text/javascript">

function sortNumber(a, b)
{
return a-b

}

var arr = new Array(6)
arr[0] = "10"
arr[1] = "5"
arr[2] = "40"
arr[3] = "25"
arr[4] = "1000"
arr[5] = "1"

document.write(arr + "<br />")
document.write(arr.sort(sortNumber))

</script>

<script type="text/javascript">

//返回a-b结果的值
function sortNumber(a, b)
{
return a-b

}

//建立一个数组
var arr = new Array(6)
arr[0] = "10"
arr[1] = "5"
arr[2] = "40"
arr[3] = "25"
arr[4] = "1000"
arr[5] = "1"

//sort应该是排序方法，将数组按一定顺序排序
document.write(arr + "<br />")
document.write(arr.sort(sortNumber))

</script>