HTML th tag

Example

A simple HTML table, containing two columns and two rows:

<table border="1"> <tr> <th>Month</th> <th>Savings</th> </tr> <tr> <td>January</td> <td>$100</td> </tr> </table>

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Definition and Usage

The <th> tag defines a header cell in an HTML table.
An HTML table has two kinds of cells:

• Header cells - contains header information (created with the th element)
• Standard cells - contains data (created with the td element)

The text in a th element is bold and centered.
The text in a td element is regular and left-aligned.

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Browser Support

The <th> tag is supported in all major browsers.

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Differences Between HTML and XHTML

The "bgcolor", "height", "width", and "nowrap" attributes of the th element were deprecated in HTML 4.01, and are not supported in XHTML 1.0 Strict DTD.

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Tips and Notes

Tip: Use the colspan and rowspan attributes to let the content span over multiple columns or rows!

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Optional Attributes

DTD indicates in which DTD the attribute is allowed. S=Strict, T=Transitional, and F=Frameset.

Attribute	Value	Description	DTD
abbr	text	Specifies an abbreviated version of the content in a cell	STF
align	left right center justify char	Aligns the content in a cell	STF
axis	category_name	Categorizes cells	STF
bgcolor	rgb(x,x,x) #xxxxxx colorname	Deprecated. Use styles instead. Specifies a background color for a cell	TF
char	character	Aligns the content in a cell to a character	STF
charoff	pixels %	Sets the number of characters the content will be aligned from the character specified by the char attribute	STF
colspan	number	Sets the number of columns a cell should span	STF
height	pixels %	Deprecated. Use styles instead. Sets the height of a cell	TF
nowrap	nowrap	Deprecated. Use styles instead. Specifies that the content inside a cell should not wrap	TF
rowspan	number	Sets the number of rows a cell should span	STF
scope	col colgroup row rowgroup	Defines a way to associate header cells and data cells in a table	STF
valign	top middle bottom baseline	Vertical aligns the content in a cell	STF
width	pixels %	Deprecated. Use styles instead. Specifies the width of a cell	TF

Standard Attributes

id, class, title, style, dir, lang, xml:lang

For a full description, go to StandardAttributes.

Event Attributes

onclick, ondblclick, onmousedown, onmouseup, onmouseover, onmousemove, onmouseout, onkeypress, onkeydown, onkeyup

For a full description, go to Event Attributes.