<colgroup> - 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 <colgroup> element defines a group of columns within a table.

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	若 `span` attribute is present: none, it is an empty element . If the attribute is not present: zero or more `<col>` element
Tag omission	The start tag may be omitted, if it has a `<col>` element as its first child and if it is not preceded by a `<colgroup>` whose end tag has been omitted. The end tag may be omitted, if it is not followed by a space or a comment.
Permitted parents	A `<table>` element. The `<colgroup>` must appear after any optional `<caption>` element but before any `<thead>` , `<th>` , `<tbody>` , `<tfoot>` and `<tr>` 元素。
Implicit ARIA role	无对应角色
Permitted ARIA roles	No `role` permitted
DOM 接口	`HTMLTableColElement`

属性

This element's attributes include the 全局属性 .

span

This attribute contains a positive integer indicating the number of consecutive columns the


<colgroup>

element spans. If not present, its default value is

. 注意： This attribute is applied on the attributes of the column group, it has no effect on the CSS styling rules associated with it or, even more, to the cells of the column's members of the group.

span attribute is not permitted if there are one or more <col> elements within the <colgroup> .

Deprecated attributes

The following attributes are deprecated and should not be used. They are documented below for reference when updating existing code and for historical interest only.

align

This enumerated attribute specifies how horizontal alignment of each column cell content will be handled. Possible values are:

left , aligning the content to the left of the cell
center , centering the content in the cell
right , aligning the content to the right of the cell
justify , inserting spaces into the textual content so that the content is justified in the cell
char , aligning the textual content on a special character with a minimal offset, defined by the char and charoff 属性。

If this attribute is not set, the left value is assumed. The descendant <col> elements may override this value using their own align 属性。

注意：

Do not try to set the text-align property on a selector giving a <colgroup> element. Because <td> elements are not descendant of the <colgroup> element, they won't inherit it.
If the table doesn't use a colspan attribute, use one td:nth-child(an+b) CSS selector per column, where a is the total number of the columns in the table and b is the ordinal position of this column in the table. Only after this selector the text-align property can be used.
If the table does use a colspan attribute, the effect can be achieved by combining adequate CSS attribute selectors like [colspan=n] , though this is not trivial.

bgcolor

The background color of the table. It is a 6-digit hexadecimal RGB code , prefixed by a ' # '. One of the predefined color kewords can also be used.

To achieve a similar effect, use the CSS background-color 特性。

char

This attribute specifies the alignment of the content in a column group to a character. Typical values for this include a period (.) when attempting to align numbers or monetary values. If



align

is not set to


char

, this attribute is ignored, though it will still be used as the default value for the



align

的


<col>

which are members of this column group.

charoff: This attribute is used to indicate the number of characters to offset the column data from the alignment character specified by the char 属性。

valign

This attribute specifies the vertical alignment of the text within each cell of the column. Possible values for this attribute are:

baseline , which will put the text as close to the bottom of the cell as it is possible, but align it on the baseline of the characters instead of the bottom of them. If characters are all of the size, this has the same effect as bottom .
bottom , which will put the text as close to the bottom of the cell as it is possible;
middle , which will center the text in the cell;
and top , which will put the text as close to the top of the cell as it is possible.

注意：

Do not try to set the vertical-align property on a selector giving a <colgroup> element. Because <td> elements are not descendant of the <colgroup> element, they won't inherit it.
If the table doesn't use a colspan attribute, use the td:nth-child(an+b) CSS selector per column, where a is the total number of the columns in the table and b is the ordinal position of the column in the table. Only after this selector the vertical-align property can be used.
If the table does use a colspan attribute, the effect can be achieved by combining adequate CSS attribute selectors like [colspan=n] , though this is not trivial.

范例

请参阅 <table> page for examples on <colgroup> .

规范

规范	状态	注释
HTML 实时标准 The definition of '<colgroup>' in that specification.	实时标准
HTML5 The definition of '<colgroup>' in that specification.	推荐
HTML 4.01 Specification The definition of '<colgroup>' 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
`colgroup`	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 ?
`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 ?
`span`	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

CSS properties and pseudo-classes that may be specially useful to style the <col> 元素：
- the width property to control the width of the column;
- the :nth-child pseudo-class to set the alignment on the cells of the column;
- the text-align property to align all cells content on the same character, like '.'.

元数据

最后修改： Nov 8, 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