The <th> tag
Definition and Usage
Defines a table header cell in a table. The text within the th element usually renders in bold.
Differences Between HTML and XHTML
The "bgcolor", "height", "width", and "nowrap" attributes of the th element were deprecated in HTML 4.01.
The "bgcolor", "height", "width", and "nowrap" attributes of the th element
are not supported in XHTML 1.0 Strict DTD.
Example
Source |
Output |
<table border = "1">
<tr>
<th>Header 1</th>
<th>Header 2</th>
</tr>
<tr>
<td>Cell A</td>
<td>Cell B</td>
</tr>
</table> |
Header 1 |
Header 2 |
Cell A |
Cell B |
|
Optional Attributes
DTD indicates in which DTD the attribute is
allowed. S=Strict, T=Transitional, and F=Frameset.
Attribute |
Value |
Description |
DTD |
abbr |
abbr_text |
Specifies an abbreviated version of the content in a cell |
STF |
align |
left
right
center
justify
char |
Specifies the horizontal alignment of cell content |
STF |
axis |
category_names |
Defines a name for a cell |
STF |
bgcolor |
rgb(x,x,x)
#xxxxxx
colorname |
Specifies the background color of the
table cell. Deprecated. Use styles instead. |
TF |
char |
character |
Specifies which character to align text on. Note:
Only used if align="char"! |
STF |
charoff |
pixels
% |
Specifies the alignment offset to the first character to
align on. Note: Only used if align="char"! |
STF |
colspan |
number |
Indicates the number of columns this cell should span |
STF |
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 |
STF |
height |
pixels |
Specifies the height of the table cell. Deprecated. Use styles instead. |
TF |
nowrap |
nowrap |
Whether to disable or enable automatic
text wrapping in this cell. Deprecated. Use styles instead. |
TF |
rowspan |
number |
Indicates the number of rows this cell should span |
STF |
scope |
col
colgroup
row
rowgroup |
Specifies if this cell provides header information for the
rest of the row that contains it (row), or for the rest of the column (col),
or for the rest of the row group that contains it (rowgroup), or for the
rest of the column group that contains it |
STF |
valign |
top
middle
bottom
baseline |
Specifies the vertical alignment of cell content |
STF |
width |
pixels
% |
Specifies the width of the table cell. Deprecated. Use styles instead. |
TF |
Standard Attributes
id, class, title, style, dir, lang, xml:lang |
For a full description, go to Standard
Attributes.
Event Attributes
onclick, ondblclick, onmousedown, onmouseup, onmouseover, onmousemove, onmouseout, onkeypress, onkeydown, onkeyup |
For a full description, go to Event Attributes.
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