<th> - HTML: HyperText Markup Language

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属性
范例
规范
浏览器兼容性
另请参阅
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HTML <th> element defines a cell as header of a group of table cells. The exact nature of this group is defined by the scope and headers 属性。

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

内容类别	None.
准许内容	流内容 , but with no header, footer, sectioning content, or heading content descendants.
Tag omission	The start tag is mandatory. The end tag may be omitted, if it is immediately followed by a `<th>` or `<td>` element or if there are no more data in its parent element.
Permitted parents	A `<tr>` 元素。
Implicit ARIA role	`columnheader` or `rowheader`
Permitted ARIA roles	任何
DOM 接口	`HTMLTableHeaderCellElement`

属性

此元素包括全局属性 .

abbr

This attribute contains a short abbreviated description of the cell's content. Some user-agents, such as speech readers, may present this description before the content itself.

colspan

This attribute contains a non-negative integer value that indicates for how many columns the cell extends. Its default value is

. Values higher than 1000 will be considered as incorrect and will be set to the default value (1).

headers

This attribute contains a list of space-separated strings, each corresponding to the id 属性在


<th>

elements that apply to this element.

rowspan

This attribute contains a non-negative integer value that indicates for how many rows the cell extends. Its default value is

; if its value is set to

, it extends until the end of the table section (


<thead>


<tbody>


<tfoot>

, even if implicitly defined), that the cell belongs to. Values higher than 65534 are clipped down to 65534.

scope

This enumerated attribute defines the cells that the header (defined in the


<th>

) element relates to. It may have the following values:

row : The header relates to all cells of the row it belongs to.
col : The header relates to all cells of the column it belongs to.
rowgroup : The header belongs to a rowgroup and relates to all of its cells. These cells can be placed to the right or the left of the header, depending on the value of the dir attribute in the <table> 元素。
colgroup : The header belongs to a colgroup and relates to all of its cells.
auto

The default value when this attribute is not specified is auto .

Deprecated attributes

align Obsolete since HTML5

This enumerated attribute specifies how the cell content's horizontal alignment will be handled. Possible values are:

left : The content is aligned to the left of the cell.
center : The content is centered in the cell.
right : The content is aligned to the right of the cell.
justify (with text only): The content is stretched out inside the cell so that it covers its entire width.
char (with text only): The content is aligned to a character inside the <th> element with minimal offset. This character is defined by the char and charoff 属性。

The default value when this attribute is not specified is left .

注意： Do not use this attribute as it is obsolete in the latest standard.

To achieve the same effect as the left , center , right or justify values, apply the CSS text-align property to the element.
To achieve the same effect as the char value, give the text-align property the same value you would use for the char . Unimplemented in CSS3.

axis Obsolete since HTML5

This attribute contains a list of space-separated strings. Each string is the

id

of a group of cells that this header applies to. 注意： Do not use this attribute as it is obsolete in the latest standard: use the



scope

attribute instead.

bgcolor

This attribute defines the background color of each cell in a column. It consists of a 6-digit hexadecimal code as defined in sRGB and is prefixed by '#'. This attribute may be used with one of sixteen predefined color strings:

	`black` = "#000000"		`green` = "#008000"
	`silver` = "#C0C0C0"		`lime` = "#00FF00"
	`gray` = "#808080"		`olive` = "#808000"
	`white` = "#FFFFFF"		`yellow` = "#FFFF00"
	`maroon` = "#800000"		`navy` = "#000080"
	`red` = "#FF0000"		`blue` = "#0000FF"
	`purple` = "#800080"		`teal` = "#008080"
	`fuchsia` = "#FF00FF"		`aqua` = "#00FFFF"

注意： Do not use this attribute, as it is non-standard and only implemented in some versions of Microsoft Internet Explorer: The


<th>

element should be styled using CSS . To create a similar effect use the


background-color

特性在 CSS 代替。

char Obsolete since HTML5

The content in the cell element is aligned to a character. Typical values include a period (.) to align numbers or monetary values. If



align

is not set to


char

, this attribute is ignored. 注意： Do not use this attribute as it is obsolete in the latest standard. To achieve the same effect, you can specify the character as the first value of the


text-align

property, Unimplemented in CSS3.

charoff Obsolete since HTML5

This attribute is used to shift column data to the right of the character specified by the char attribute. Its value specifies the length of this shift. 注意： Do not use this attribute as it is obsolete in the latest standard.

height Deprecated since HTML4 , Obsolete since HTML5

This attribute is used to define a recommended cell height. 注意： Do not use this attribute as it is obsolete in the latest standard: use the CSS


height

特性代替。

valign Obsolete since HTML5

This attribute specifies how a text is vertically aligned inside a cell. Possible values for this attribute are:

baseline : Positions the text near the bottom of the cell and aligns it with the baseline of the characters instead of the bottom. If characters don't descend below the baseline, the baseline value achieves the same effect as bottom .
bottom : Positions the text near the bottom of the cell.
middle : Centers the text in the cell.
and top : Positions the text near the top of the cell.

注意： Do not use this attribute as it is obsolete in the latest standard: use the CSS


vertical-align

特性代替。

width Deprecated since HTML4 , Obsolete since HTML5

This attribute is used to define a recommended cell width. Additional space can be added with the


cellspacing

and


cellpadding

properties and the width of the


<col>

element can also create extra width. But, if a column's width is too narrow to show a particular cell properly, it will be widened when displayed. 注意： Do not use this attribute as it is obsolete in the latest standard: use the CSS


width

特性代替。

范例

见 <table> for examples on <th> .

规范

规范	状态	注释
HTML 实时标准 The definition of 'th element' in that specification.	实时标准
HTML5 The definition of 'th element' in that specification.	推荐

浏览器兼容性

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`th`	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 Yes	Opera 完整支持 Yes	Safari 完整支持 Yes	WebView Android 完整支持 Yes	Chrome Android 完整支持 Yes	Firefox Android 完整支持 4	Opera Android 完整支持 Yes	Safari iOS 完整支持 Yes	Samsung Internet Android 完整支持 Yes
`abbr`	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 Yes	Opera 完整支持 Yes	Safari 完整支持 Yes	WebView Android 完整支持 Yes	Chrome Android 完整支持 Yes	Firefox Android 完整支持 4	Opera Android 完整支持 Yes	Safari iOS 完整支持 Yes	Samsung Internet Android 完整支持 Yes
`align` 弃用	Chrome ?	Edge 完整支持 12	Firefox 不支持 No 注意事项不支持 No 注意事项注意事项见 bug 915	IE 完整支持 Yes	Opera ?	Safari ?	WebView Android ?	Chrome Android ?	Firefox Android 不支持 No 注意事项不支持 No 注意事项注意事项见 bug 915	Opera Android ?	Safari iOS ?	Samsung Internet Android ?
`axis` 弃用	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 Yes	Opera 完整支持 Yes	Safari 完整支持 Yes	WebView Android 完整支持 Yes	Chrome Android 完整支持 Yes	Firefox Android 完整支持 4	Opera Android 完整支持 Yes	Safari iOS 完整支持 Yes	Samsung Internet Android 完整支持 Yes
`bgcolor` 弃用	Chrome ?	Edge ?	Firefox 不支持 No	IE 完整支持 Yes	Opera ?	Safari ?	WebView Android ?	Chrome Android ?	Firefox Android 不支持 No	Opera Android ?	Safari iOS ?	Samsung Internet Android ?
`char` 弃用	Chrome ?	Edge 完整支持 12	Firefox 不支持 No 注意事项不支持 No 注意事项注意事项见 bug 2212	IE 完整支持 Yes	Opera ?	Safari ?	WebView Android ?	Chrome Android ?	Firefox Android 不支持 No 注意事项不支持 No 注意事项注意事项见 bug 2212	Opera Android ?	Safari iOS ?	Samsung Internet Android ?
`charoff` 弃用	Chrome ?	Edge 完整支持 12	Firefox 不支持 No 注意事项不支持 No 注意事项注意事项见 bug 2212	IE 完整支持 Yes	Opera ?	Safari ?	WebView Android ?	Chrome Android ?	Firefox Android 不支持 No 注意事项不支持 No 注意事项注意事项见 bug 2212	Opera Android ?	Safari iOS ?	Samsung Internet Android ?
`colspan`	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 Yes	Opera 完整支持 Yes	Safari 完整支持 Yes	WebView Android 完整支持 Yes	Chrome Android 完整支持 Yes	Firefox Android 完整支持 4	Opera Android 完整支持 Yes	Safari iOS 完整支持 Yes	Samsung Internet Android 完整支持 Yes
`headers`	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 Yes	Opera 完整支持 Yes	Safari 完整支持 Yes	WebView Android 完整支持 Yes	Chrome Android 完整支持 Yes	Firefox Android 完整支持 4	Opera Android 完整支持 Yes	Safari iOS 完整支持 Yes	Samsung Internet Android 完整支持 Yes
`rowspan`	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 Yes	Opera 完整支持 Yes	Safari 完整支持 Yes	WebView Android 完整支持 Yes	Chrome Android 完整支持 Yes	Firefox Android 完整支持 4	Opera Android 完整支持 Yes	Safari iOS 完整支持 Yes	Samsung Internet Android 完整支持 Yes
`scope`	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 Yes	Opera 完整支持 Yes	Safari 完整支持 Yes	WebView Android 完整支持 Yes	Chrome Android 完整支持 Yes	Firefox Android 完整支持 4	Opera Android 完整支持 Yes	Safari iOS 完整支持 Yes	Samsung Internet Android 完整支持 Yes
`valign` 弃用	Chrome ?	Edge 完整支持 12	Firefox 不支持 No 注意事项不支持 No 注意事项注意事项见 bug 915	IE 完整支持 Yes	Opera ?	Safari ?	WebView Android ?	Chrome Android ?	Firefox Android 不支持 No 注意事项不支持 No 注意事项注意事项见 bug 915	Opera Android ?	Safari iOS ?	Samsung Internet Android ?
`width` 弃用	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 Yes	Opera 完整支持 Yes	Safari 完整支持 Yes	WebView Android 完整支持 Yes	Chrome Android 完整支持 Yes	Firefox Android 完整支持 4	Opera Android 完整支持 Yes	Safari iOS 完整支持 Yes	Samsung Internet Android 完整支持 Yes

图例

完整支持
不支持
兼容性未知 ?
弃用。不要用于新网站。
见实现注意事项。

另请参阅

Other table-related HTML Elements: <caption> , <col> , <colgroup> , <table> , <tbody> , <td> , <tfoot> , <thead> , <tr> .

元数据

最后修改： Jul 7, 2020

<caption>
<col>
<colgroup>
<table>
<tbody>
<td>
<tfoot>
<th>
<thead>
<tr>
HTML 元素
1. A
  1. <a>
  2. <abbr>
  3. ~~<acronym>~~
  4. <address>
  5. ~~<applet>~~
  6. <area>
  7. <article>
  8. <aside>
  9. <audio>
2. B
  1. <b>
  2. <base>
  3. ~~<basefont>~~
  4. <bdi>
  5. <bdo>
  6. ~~<bgsound>~~
  7. ~~<big>~~
  8. ~~<blink>~~
  9. <blockquote>
  10. <body>
  11. <br>
  12. <button>
3. C
  1. <canvas>
  2. <caption>
  3. ~~<center>~~
  4. <cite>
  5. <code>
  6. <col>
  7. <colgroup>
  8. <content>
4. D
  1. <data>
  2. <datalist>
  3. <dd>
  4. <del>
  5. <details>
  6. <dfn>
  7. <dialog>
  8. ~~<dir>~~
  9. <div>
  10. <dl>
  11. <dt>
5. E
  1. <em>
  2. <embed>
6. F
  1. <fieldset>
  2. <figcaption>
  3. <figure>
  4. ~~<font>~~
  5. <footer>
  6. <form>
  7. ~~<frame>~~
  8. ~~<frameset>~~
7. G H
  1. <h1>
  2. <h2>
  3. <h3>
  4. <h4>
  5. <h5>
  6. <h6>
  7. <head>
  8. <header>
  9. ~~<hgroup>~~
  10. <hr>
  11. <html>
8. I
  1. <i>
  2. <iframe>
  3. <img>
  4. <input>
  5. <ins>
  6. ~~<isindex>~~
9. J K
  1. <kbd>
  2. <keygen>
10. L
  1. <label>
  2. <legend>
  3. <li>
  4. <link>
  5. ~~<listing>~~
11. M
  1. <main>
  2. <map>
  3. <mark>
  4. ~~<marquee>~~
  5. <menu>
  6. <menuitem>
  7. <meta>
  8. <meter>
12. N
  1. <nav>
  2. ~~<nobr>~~
  3. ~~<noframes>~~
  4. <noscript>
13. O
  1. <object>
  2. <ol>
  3. <optgroup>
  4. <option>
  5. <output>
14. P
  1. <p>
  2. <param>
  3. <picture>
  4. ~~<plaintext>~~
  5. <pre>
  6. <progress>
15. Q
  1. <q>
16. R
  1. <rp>
  2. <rt>
  3. <rtc>
  4. <ruby>
17. S
  1. <s>
  2. <samp>
  3. <script>
  4. <section>
  5. <select>
  6. <shadow>
  7. <slot>
  8. <small>
  9. <source>
  10. ~~<spacer>~~
  11. <span>
  12. ~~<strike>~~
  13. <strong>
  14. <style>
  15. <sub>
  16. <summary>
  17. <sup>
18. T
  1. <table>
  2. <tbody>
  3. <td>
  4. <template>
  5. <textarea>
  6. <tfoot>
  7. <th>
  8. <thead>
  9. <time>
  10. <title>
  11. <tr>
  12. <track>
  13. ~~<tt>~~
19. U
  1. <u>
  2. <ul>
20. V
  1. <var>
  2. <video>
21. W
  1. <wbr>
22. X Y Z
  1. ~~<xmp>~~

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属性

Deprecated attributes

范例

规范

浏览器兼容性

图例

另请参阅

相关话题