sort字母排序，数字排序，首字母排序

案例1：javascript

在本例中，咱们将建立一个数组，并按字母顺序进行排序：java

<script type="text/javascript">

var arr = new Array(6)
arr[0] = "George"
arr[1] = "John"
arr[2] = "Thomas"
arr[3] = "James"
arr[4] = "Adrew"
arr[5] = "Martin"

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

</script>arr.sort()

输出：数组

George,John,Thomas,James,Adrew,Martin
Adrew,George,James,John,Martin,Thomas

<script type="text/javascript">

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()

</script>arr.sort()

输出：code

10,5,40,25,1000,1
1,10,1000,25,40,5

<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()

</script>arr.sort(sortNumber)

输出：排序

10,5,40,25,1000,1
1,5,10,25,40,1000