XHTML » Tags » ol

Syntax:
<ol> ... </ol>

The ol tag is used to delimit the start and stop of an ordered list. An ordered list is a collection of items (typically related somehow) that need to be listed in particular order.

For example, an ordered list could be an index, table of contents, or a set of instructions. The default is to list each item in numeric order (starting with the number 1). However, you can also specify Roman numerals or alphabetic characters.

Most browsers separate the list from any preceding and following text by paragraph breaks. You can nest ordered lists and the nested lists will also be in ordered value.
 
You must use the li tag to display an item in the list.
 
You can use the ul tag to create an unordered list and the dl tag to create a definition list.
 
The separate closing tag is mandatory.
 

Examples

Code:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>DevGuru XHTML ol Tag Example</title>
</head>
<body>
Three Major Types Of Lists:
<ol>
<li> Definition List</li>
<ol>
<li> dd tag</li>
<li> dl tag</li>
<li> dt tag</li>
</ol>
<li> Ordered List</li>
<ol style="list-style-type: upper-roman;">
<li> ol tag</li>
<li> li tag</li>
</ol>
<li> Unordered List</li>
<ol style="list-style-type: lower-alpha;">
<li> ul tag</li>
<li> li tag</li>
</ol>
</ol>
</body>
</html>
Output:
Three Major Types Of Lists:
  1. Definition List
    1. dd tag
    2. dl tag
    3. dt tag
  2. Ordered List
    1. ol tag
    2. li tag
  3. Unordered List
    1. ul tag
    2. li tag
Language(s): XHTML

Events

onclick

Syntax: onclick="action"

The onclick event is associated with the single click of a mouse on a selected HTML tag (element). Whenever you single click the element, the script code of the onclick is executed. This script can also call functions or subroutines which contain code that you want to run when the single click occurs.

ondblclick

Syntax: ondblclick="action"

The ondblclick event is associated with the double click of a mouse on a selected HTML element. Whenever you double click the element, the script code of the ondblclick is executed. This script can also call functions or subroutines which contain code that you want to run when the double click occurs.

onkeydown

Syntax: onkeydown="action"

The onkeydown event is associated with pressing down a key on the keyboard while the mouse is inside a selected HTML tag (element). In other words, the key down event occurred while the HTML element was in focus. Whenever you press down the key, the script code of the onkeydown is executed.

onkeypress

Syntax: onkeypress="action"

The onkeypress event is associated with press of a key on the keyboard while the mouse is inside a selected HTML element. In other words, the key press event occurred while the HTML element was in focus. Whenever you press the key, the script code of the onkeypress is executed.

onkeyup

Syntax: onkeyup="action"

The onkeyup event is associated with releasing up a key on the keyboard while the mouse is inside a selected HTML tag (element). In other words, the key up event occurred while the HTML element was in focus. Whenever you release the key, the script code of the onkeyup is executed.

onmousedown

Syntax: onmousedown="action"

The onmousedown event is associated with clicking down the mouse button while the mouse is inside a selected HTML tag (element). In other words, the mouse down event occurred while the HTML element was in focus. Every time you click down the mouse, while inside the element, the script code of the onmousedown is executed. This script can also call functions or subroutines which contain code that you want to run when this event occurs.

onmousemove

Syntax: onmousemove="action"

The onmousemove event is associated with moving the mouse around while inside a selected HTML tag (element). In other words, the mouse move event occurred while the HTML element was in focus. Every time you move the mouse around the element, the script code of the onmousemove is executed. This script can also call functions or subroutines that contain code that you want to run when this event occurs.

onmouseout

Syntax: onmouseout="action"

The onmouseout event is associated with moving the mouse out of a selected HTML tag (element). In other words, the mouse out event occurred while the HTML element was in focus. Every time you move the mouse out of the element, the script code of the onmouseout is executed. This script can also call functions or subroutines which contain code that you want to run when this event occurs.

onmouseover

Syntax: onmouseover="action"

The onmouseover event is associated with moving the mouse over a selected HTML tag (element). In other words, the mouse over event occurred while the HTML element was in focus. Every time you move the mouse over the element, the script code of the onmouseover is executed. This script can also call functions or subroutines which contain code that you want to run when this event occurs.

onmouseup

Syntax: onmouseup="action"

The onmouseup event is associated with the releasing up portion of a click of the mouse while inside a selected HTML tag (element). In other words, the mouse up event occurred while the HTML element was in focus. Every time you release the mouse up, while in the element, the script code of the onmouseup is executed. This script can also call functions or subroutines which contain code that you want to run when this event occurs.

See Also: