js对Table进行排序(点击标题)

Sample：这个是从网络上摘过来的，忘记是哪里了·

点击列头标题可进行排序

Item	Name	Date
Item 3	Steven	950227
Item 2	Emil	990227
Item 1	Erik	990228
Item 4	Scott	960227
Item 7	Fabian	970227
Item 6	Thomas	900227
Item 5	Mike	880227
Item 8	Adam	930227
Item 11	Bill	940227
Item 10	Marc	890227
Item 9	Linus	980227
Item 12	Ronald	960227
Item 15	Peter	950227
Item 14	Carlos	910227
Item 13	Paul	920227
Item 16	Arnold	960227

Below is a table that is using a custom attribute called type in each header cell to define how to sort the column.

String	String	Number	Date
apple	Strawberry	45	2001-03-13
Banana	orange	7698	1789-07-14
orange	Banana	4546	1949-07-04
Strawberry	apple	987	1975-08-19
Pear	blueberry	98743	2001-01-01
blueberry	Pear	4	2001-04-18