HTML <th> Tag
The HTML <th>
tag is used for specifying a header cell (or table header) within a table.
This tag must be nested inside a <tr>
tag, which in turn must also be nested correctly. You can find out more by viewing the <table>
tag specifications.
Also see the <td>
tag for declaring table data.
Attributes
Attributes can be added to an HTML element to provide more information about how the element should appear or behave.
The <th>
element accepts the following attributes.
Attribute | Description |
---|---|
colspan | Specifies the number of columns the current cell spans across. |
rowspan | Specifies the number of rows the current cell spans across. |
headers | Specifies a space-separated list of header cells that contain information about this cell. The value needs to correspond with the id of the header cell (which is set using the id attribute). This attribute is useful for non-visual browsers. |
scope | This attribute is used on header cells and specifies the cells that will use this header's information.
Possible values:
|
abbr | Specifies an alternative label for the header cell. For example, this could be an abbreviated form of the full header cell, an expansion, or different phrasing. |
Global Attributes
The following attributes are standard across all HTML elements. Therefore, you can use these attributes with the <th>
tag , as well as with all other HTML tags.
accesskey
autocapitalize
class
contenteditable
data-*
dir
draggable
hidden
id
inputmode
is
itemid
itemprop
itemref
itemscope
itemtype
lang
part
slot
spellcheck
style
tabindex
title
translate
For a full explanation of these attributes, see HTML 5 global attributes.
Event Handlers
Event handler content attributes enable you to invoke a script from within your HTML. The script is invoked when a certain "event" occurs. Each event handler content attribute deals with a different event.
onabort
onauxclick
onblur
oncancel
oncanplay
oncanplaythrough
onchange
onclick
onclose
oncontextmenu
oncopy
oncuechange
oncut
ondblclick
ondrag
ondragend
ondragenter
ondragexit
ondragleave
ondragover
ondragstart
ondrop
ondurationchange
onemptied
onended
onerror
onfocus
onformdata
oninput
oninvalid
onkeydown
onkeypress
onkeyup
onlanguagechange
onload
onloadeddata
onloadedmetadata
onloadstart
onmousedown
onmouseenter
onmouseleave
onmousemove
onmouseout
onmouseover
onmouseup
onpaste
onpause
onplay
onplaying
onprogress
onratechange
onreset
onresize
onscroll
onsecuritypolicyviolation
onseeked
onseeking
onselect
onslotchange
onstalled
onsubmit
onsuspend
ontimeupdate
ontoggle
onvolumechange
onwaiting
onwheel
Most event handler content attributes can be used on all HTML elements, but some event handlers have specific rules around when they can be used and which elements they are applicable to.
For more detail, see HTML event handler content attributes.