: The Table Foot Element - HTML: HyperText Markup Language
Trang chủ » Html Th Merge Columns
»
: The Table Foot Element - HTML: HyperText Markup Language
Có thể bạn quan tâm
The <tfoot> HTML element encapsulates a set of table rows (<tr> elements), indicating that they comprise the foot of a table with information about the table's columns. This is usually a summary of the columns, e.g., a sum of the given numbers in a column.
Try it
Attributes
This element includes the global attributes.
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 Deprecated Specifies the horizontal alignment of each foot cell. The possible enumerated values are left, center, right, justify, and char. When supported, the char value aligns the textual content on the character defined in the char attribute and on offset defined by the charoff attribute. Use the text-align CSS property instead, as this attribute is deprecated.
bgcolor Deprecated Defines the background color of each foot cell. The value is an HTML color; either a 6-digit hexadecimal RGB code, prefixed by a #, or a color keyword. Other CSS <color> values are not supported. Use the background-color CSS property instead, as this attribute is deprecated.
char Deprecated Does nothing. It was originally intended to specify the alignment of the content to a character of each foot cell. 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.
charoff Deprecated Does nothing. It was originally intended to specify the number of characters to offset the foot cell content from the alignment character specified by the char attribute.
valign Deprecated Specifies the vertical alignment of each foot cell. The possible enumerated values are baseline, bottom, middle, and top. Use the vertical-align CSS property instead, as this attribute is deprecated.
Usage notes
- The <tfoot> is placed after any <caption>, <colgroup>, <thead>, <tbody>, and <tr> elements.
- Along with its related <thead> and <tbody> elements, the <tfoot> element provides useful semantic information and can be used when rendering for either screen or print. Specifying such table content groups also provides valuable contextual information for assistive technologies, including screen readers and search engines.
- When printing a document, in the case of a multipage table, the table foot usually specifies information that is output as an intermediate summary on each page.
Example
See <table> for a complete table example introducing common standards and best practices.
Table with footer
This example demonstrates a table divided into a head section with column headers, a body section with the table's main data, and a foot section summarizing data of one column.
HTML
The <thead>, <tbody>, and <tfoot> elements are used to structure a basic table into semantic sections. The <tfoot> element represents the foot section of the table, which contains a row (<tr>) representing the calculated average of the values in the "Credits" column.
To allocate the cells in the foot to the correct columns, the colspan attribute is used on the <th> element to span row header cell across the first three table columns. The single data cell (<td>) in the foot is automatically placed in the correct location, i.e., the fourth column, with the omitted colspan attribute value defaulting to 1. Additionally, the scope attribute is set to row on the header cell (<th>) in the foot to explicitly define that this foot header cell relates to the table cells within the same row, which in our example is the one data cell in the foot row that contains the calculated average.
html<table> <thead> <tr> <th>Student ID</th> <th>Name</th> <th>Major</th> <th>Credits</th> </tr> </thead> <tbody> <tr> <td>3741255</td> <td>Jones, Martha</td> <td>Computer Science</td> <td>240</td> </tr> <tr> <td>3971244</td> <td>Nim, Victor</td> <td>Russian Literature</td> <td>220</td> </tr> <tr> <td>4100332</td> <td>Petrov, Alexandra</td> <td>Astrophysics</td> <td>260</td> </tr> </tbody> <tfoot> <tr> <th colspan="3" scope="row">Average Credits</th> <td>240</td> </tr> </tfoot> </table> CSS
Some basic CSS is used to style and highlight the table foot so that the foot cells stand out from the data in the table body.
csstfoot { border-top: 3px dotted rgb(160 160 160); background-color: #2c5e77; color: #fff; } tfoot th { text-align: right; } tfoot td { font-weight: bold; } thead { border-bottom: 2px solid rgb(160 160 160); background-color: #2c5e77; color: #fff; } tbody { background-color: #e4f0f5; } table { border-collapse: collapse; border: 2px solid rgb(140 140 140); font-family: sans-serif; font-size: 0.8rem; letter-spacing: 1px; } th, td { border: 1px solid rgb(160 160 160); padding: 8px 10px; } tr > td:last-of-type { text-align: center; } Result
Technical summary
Content categories None. Permitted content Zero or more <tr> elements. Tag omission The start tag is mandatory. The end tag may be omitted if there is no more content in the parent <table> element. Permitted parents A <table> element. The <tfoot> must appear after any <caption>, <colgroup>, <thead>, <tbody>, and <tr> elements. Note that this is the requirement in HTML.Originally, in HTML4, the opposite was true: the <tfoot> element could not be placed after any <tbody> and <tr> elements. Implicit ARIA role rowgroup Permitted ARIA roles Any DOM interface HTMLTableSectionElement
Specifications
Specification HTML Standard # the-tfoot-element
Browser compatibility
BCD tables only load in the browser
See also
- Learn: HTML tables
- <caption>, <col>, <colgroup>, <table>, <tbody>, <td>, <th>, <thead>, <tr>: Other table-related elements
- background-color: CSS property to set the background color of each foot cell
- border: CSS property to control borders of foot cells
- text-align: CSS property to horizontally align each foot cell content
- vertical-align: CSS property to vertically align each foot cell content
Từ khóa » Html Th Merge Columns
-
HTML Th Colspan Attribute - W3Schools
-
How To Merge Table Columns In HTML? - Tutorialspoint
-
Can I Have One HTML Table Header Be Over Two Table Columns? Like ...
-
How To Combine Or Merge Cells In An HTML Table - Computer Hope
-
HTML | Colspan Attribute - GeeksforGeeks
-
Table Rowspan And Colspan In HTML Explained (With Examples) »
-
Tables With Irregular Headers | Web Accessibility Initiative (WAI) | W3C
-
How To Merge The Table Cells In HTML? - - RevisitClass
-
CMS Basics: Working With HTML Tables - University Of Houston
-
: The Table Column Group Element - MDN Web Docs
-
HTML5 Tables
-
Merging Cells In An HTML Table | SAP Help Portal
-
TABLE - HTML Tables
-
Advanced Table Settings: Column Width, Alignment And Merging Cells
Liên Hệ
TRUYỀN HÌNH CÁP SÔNG THU ĐÀ NẴNG
Địa Chỉ: 58 Hàm Nghi - Đà Nẵng
Phone: 0904961917
Facebook: https://fb.com/truyenhinhcapsongthu/
Twitter: @ Capsongthu
Copyright © 2022 | Thiết Kế Truyền Hình Cáp Sông Thu
Trang chủ » Html Th Merge Columns »
: The Table Foot Element - HTML: HyperText Markup LanguageCó thể bạn quan tâm
The <tfoot> HTML element encapsulates a set of table rows (<tr> elements), indicating that they comprise the foot of a table with information about the table's columns. This is usually a summary of the columns, e.g., a sum of the given numbers in a column.
Try it
Attributes
This element includes the global attributes.
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 DeprecatedSpecifies the horizontal alignment of each foot cell. The possible enumerated values are left, center, right, justify, and char. When supported, the char value aligns the textual content on the character defined in the char attribute and on offset defined by the charoff attribute. Use the text-align CSS property instead, as this attribute is deprecated.
bgcolor DeprecatedDefines the background color of each foot cell. The value is an HTML color; either a 6-digit hexadecimal RGB code, prefixed by a #, or a color keyword. Other CSS <color> values are not supported. Use the background-color CSS property instead, as this attribute is deprecated.
char DeprecatedDoes nothing. It was originally intended to specify the alignment of the content to a character of each foot cell. 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.
charoff DeprecatedDoes nothing. It was originally intended to specify the number of characters to offset the foot cell content from the alignment character specified by the char attribute.
valign DeprecatedSpecifies the vertical alignment of each foot cell. The possible enumerated values are baseline, bottom, middle, and top. Use the vertical-align CSS property instead, as this attribute is deprecated.
Usage notes
- The <tfoot> is placed after any <caption>, <colgroup>, <thead>, <tbody>, and <tr> elements.
- Along with its related <thead> and <tbody> elements, the <tfoot> element provides useful semantic information and can be used when rendering for either screen or print. Specifying such table content groups also provides valuable contextual information for assistive technologies, including screen readers and search engines.
- When printing a document, in the case of a multipage table, the table foot usually specifies information that is output as an intermediate summary on each page.
Example
See <table> for a complete table example introducing common standards and best practices.
Table with footer
This example demonstrates a table divided into a head section with column headers, a body section with the table's main data, and a foot section summarizing data of one column.
HTML
The <thead>, <tbody>, and <tfoot> elements are used to structure a basic table into semantic sections. The <tfoot> element represents the foot section of the table, which contains a row (<tr>) representing the calculated average of the values in the "Credits" column.
To allocate the cells in the foot to the correct columns, the colspan attribute is used on the <th> element to span row header cell across the first three table columns. The single data cell (<td>) in the foot is automatically placed in the correct location, i.e., the fourth column, with the omitted colspan attribute value defaulting to 1. Additionally, the scope attribute is set to row on the header cell (<th>) in the foot to explicitly define that this foot header cell relates to the table cells within the same row, which in our example is the one data cell in the foot row that contains the calculated average.
html<table> <thead> <tr> <th>Student ID</th> <th>Name</th> <th>Major</th> <th>Credits</th> </tr> </thead> <tbody> <tr> <td>3741255</td> <td>Jones, Martha</td> <td>Computer Science</td> <td>240</td> </tr> <tr> <td>3971244</td> <td>Nim, Victor</td> <td>Russian Literature</td> <td>220</td> </tr> <tr> <td>4100332</td> <td>Petrov, Alexandra</td> <td>Astrophysics</td> <td>260</td> </tr> </tbody> <tfoot> <tr> <th colspan="3" scope="row">Average Credits</th> <td>240</td> </tr> </tfoot> </table>CSS
Some basic CSS is used to style and highlight the table foot so that the foot cells stand out from the data in the table body.
csstfoot { border-top: 3px dotted rgb(160 160 160); background-color: #2c5e77; color: #fff; } tfoot th { text-align: right; } tfoot td { font-weight: bold; } thead { border-bottom: 2px solid rgb(160 160 160); background-color: #2c5e77; color: #fff; } tbody { background-color: #e4f0f5; } table { border-collapse: collapse; border: 2px solid rgb(140 140 140); font-family: sans-serif; font-size: 0.8rem; letter-spacing: 1px; } th, td { border: 1px solid rgb(160 160 160); padding: 8px 10px; } tr > td:last-of-type { text-align: center; }Result
Technical summary
Content categories | None. |
---|---|
Permitted content | Zero or more <tr> elements. |
Tag omission | The start tag is mandatory. The end tag may be omitted if there is no more content in the parent <table> element. |
Permitted parents | A <table> element. The <tfoot> must appear after any <caption>, <colgroup>, <thead>, <tbody>, and <tr> elements. Note that this is the requirement in HTML.Originally, in HTML4, the opposite was true: the <tfoot> element could not be placed after any <tbody> and <tr> elements. |
Implicit ARIA role | rowgroup |
Permitted ARIA roles | Any |
DOM interface | HTMLTableSectionElement |
Specifications
Specification |
---|
HTML Standard # the-tfoot-element |
Browser compatibility
BCD tables only load in the browser
See also
- Learn: HTML tables
- <caption>, <col>, <colgroup>, <table>, <tbody>, <td>, <th>, <thead>, <tr>: Other table-related elements
- background-color: CSS property to set the background color of each foot cell
- border: CSS property to control borders of foot cells
- text-align: CSS property to horizontally align each foot cell content
- vertical-align: CSS property to vertically align each foot cell content
Từ khóa » Html Th Merge Columns
-
HTML Th Colspan Attribute - W3Schools
-
How To Merge Table Columns In HTML? - Tutorialspoint
-
Can I Have One HTML Table Header Be Over Two Table Columns? Like ...
-
How To Combine Or Merge Cells In An HTML Table - Computer Hope
-
HTML |
Colspan Attribute - GeeksforGeeks Table Rowspan And Colspan In HTML Explained (With Examples) »
Tables With Irregular Headers | Web Accessibility Initiative (WAI) | W3C
How To Merge The Table Cells In HTML? - - RevisitClass
CMS Basics: Working With HTML Tables - University Of Houston
: The Table Column Group Element - MDN Web Docs HTML5 Tables
Merging Cells In An HTML Table | SAP Help Portal
TABLE - HTML Tables
Advanced Table Settings: Column Width, Alignment And Merging Cells
Liên Hệ
TRUYỀN HÌNH CÁP SÔNG THU ĐÀ NẴNG
Địa Chỉ: 58 Hàm Nghi - Đà Nẵng
Phone: 0904961917
Facebook: https://fb.com/truyenhinhcapsongthu/
Twitter: @ Capsongthu
Copyright © 2022 | Thiết Kế Truyền Hình Cáp Sông Thu