HTML5: ol – ordered list

ⓘ ol – ordered list # T

The ol element represents a list (or sequence) of items; that is, a list in which the items are intentionally ordered, such that changing the order would change the meaning of the list.

Permitted contents #

zero or more li elements

Permitted attributes #

global attributes & start & reversed

ⓘ global attributes: Any attributes permitted globally.
ⓘ start = integer CHANGED #: The ordinal value of the first list item.; The start attribute on the ol element was deprecated in a previous version of HTML, but is no longer deprecated, as it has meaning and is not simply presentational.
ⓘ reversed = "reversed" or "" (empty string) or empty NEW #: If present, indicates that the list is a descending list (…, 3, 2, 1).; If not present, indicates that the list is an ascending list (1, 2, 3, …).

Additional constraints and admonitions #

The type attribute on the ol element is obsolete. Use CSS instead.
The compact attribute on the ol element is obsolete. Use CSS instead.

Tag omission #

An ol element must have both a start tag and an end tag.

Permitted parent elements #

any element that can contain flow elements

DOM interface #

interface HTMLOListElement : HTMLElement {
           attribute boolean reversed;
           attribute long start;
           attribute DOMString type;
};

Typical default display properties #

ol {

display: block;

list-style-type: decimal;

margin: 1em 0 1em 0;

padding-start: 40px; }

HTML: The Markup Language Reference