Definition and Usage
定义与用法

The sort() method is used to sort the elements of an array.
sort()方法可用来排列数组中的元素

Syntax
语法

arrayObject.sort(sortby)

Tips and Notes
提示与注意点

Note: The sort() method will sort the elements alphabetically by default. However, this means that numbers will not be sorted correctly (40 comes before 5). To sort numbers, you must create a function that compare numbers.
注意点：sort()方法的默认排列次序是按字母大小排列。这就意味着数字的排列就会不太准确（40会在5的前面显示）。如要排列数字，你就必须建立函数来比较数字

Note: After using the sort() method, the array is changed.
注意：使用sort()方法后，数组就会改变

Example
举例

In this example we will create an array and sort it alphabetically:
在这个举例中我们将建立起一个数组，并且它是按字母大小顺序排列的：

<script type="text/javascript">

var arr = new Array(6)
arr[0] = "Jani"
arr[1] = "Hege"
arr[2] = "Stale"
arr[3] = "Kai Jim"
arr[4] = "Borge"
arr[5] = "Tove"

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

</script>

The output of the code above will be:
输出的结果为：

Jani,Hege,Stale,Kai Jim,Borge,Tove
Borge,Hege,Jani,Kai Jim,Stale,Tove

Example
举例

In this example we will create an array containing numbers and sort it:
这个举例中我们建立了一个数组，里面包含了数字，我们要排列它：

<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(arr.sort())

</script>

The output of the code above will be:
输出的结果是这样：

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

Note that the numbers above are NOT sorted correctly (by numeric value). To solve this problem, we must add a function that handles this problem:
可以注意到数字部分的排列并不是按数字的大小来排列的。要解决这个问题，我们就必须加入一个函数来处理它：

<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>

The output of the code above will be:
输出结果就为这样了：

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

Try-It-Yourself Demos
尝试与演示

sort() alphabetically
How to use sort() to sort an array alphabetically.
怎样使用sort()来将数组进行字母大小排列？

sort() by number
How to use sort() to sort an array by number.
怎样使用sort()来排列数组中的数字？

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