XHTML » Tags » div

Syntax:
<div> ... </div>

The div tag is used to designate a block-line portion of an HTML document as a div element and to apply any of the core attributes of this tag against the contents of that element. The behavior of this tag is block-line, because this tag causes a line break (the equivalent of a br tag) to occur both before and after the div element. div tags, which can be nested, allow a significant degree of control and manipulation of each individual block section of your web page.

For example, you could use the class or style core attributes to apply the effects of Cascading Style Sheets, or you could use the lang attribute to display a foreign language text, or you could assign an id to each block of code for reference by a hyperlink.
 
In contrast, you should use the span tag when you want to apply attributes to an inline portion of a page. Note that the behavior of the span tag is not block-line, but rather inline, since the effects occur in the normal flow of the text and images (without the tag inserting any additional linefeeds or carriage returns).
 
With the advent of Cascading Style Sheets, both the div and span tags have gained importance and usefulness.
 
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 div Tag Example</title>
</head>
<body>
<div style="text-align: left;" id="div_example1">
The <b>div</b> offers exciting possibilities for the developer.
</div>
<div style="text-align: center;" id="div_example2">
You should take time to learn about this tag.
</div>
<div style="text-align: right;" id="div_example3">
Also check out the <b>span</b> tag.
</div>
</body>
</html>
Output:
The div offers exciting possibilities for the developer.
You should take time to learn about this tag.
Also check out the span 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: