HTML slt;ol> reversed property
Normally, an ordered list of HTML is in ascending order, but you can use the reversed property to descend the ordered list, refer to the following example:
Browser support
Currently only Chrome and Safari 6 support reversed properties.
Definitions and usages
The reversed property is a Boolean property.
The reversed property specifies that the list is in descending order (9, 8, 7...) instead of ascending (1, 2, 3...).
The difference between HTML 4.01 and HTML5
The reversed property is a new property in HTML5.
The difference between HTML and XHTML
In XHTML, properties are prohibited from minimizing, and reversed properties must be defined as .lt;ol reversed" "reversed".
Grammar
HTML and ol> tags
Refer to the manual
HTML DOM Reference Manual: HTML DOM Ol reversed property