HTML5 <th> Tag

Example A simple HTML table with two header cells and two data cells: <table> <tr> <th>Header 1</th> <th>Header 2</th> </tr> <tr> <td>Cell A</td> <td>Cell B</td> </tr> </table> Try it yourself »

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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 often bold and centered.

The text in a td element is often left-aligned.

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Differences Between HTML 4.01 and HTML5

Some HTML 4.01 attributes are not supported in HTML5.

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Attributes

Attribute	Value	Description
abbr	text	Not supported in HTML5
align	left right center justify char	Not supported in HTML5
axis	category_name	Not supported in HTML5
char	character	Not supported in HTML5
charoff	number	Not supported in HTML5
colspan	number	Indicates the number of columns this cell should span
headers	header_cells'_id	A space-separated list of cell IDs that supply header information for the cell. This attribute allows text-only browsers to render the header information for a given cell
height	pixels %	Not supported in HTML5
nowrap	nowrap	Not supported in HTML5
rowspan	number	Indicates the number of rows this cell should span
scope	col colgroup row rowgroup	Specifies the scope (which cells the table header applies to) of the table header
valign	top middle bottom baseline	Not supported in HTML5
width	pixels %	Not supported in HTML5

Standard Attributes

The <th> tag also supports the Standard Attributes in HTML5.

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Event Attributes

The <th> tag also supports the Event Attributes in HTML5.

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