<thead>
HTML <thead> Tag
The <thead> tag defines the header of an HTML table. The tag is used along with <tbody> and <tfoot> tags, that specify the body and footer of the table, respectively.
The <thead> tag must be used as a child of the <table> element, after the <caption>, <colgroup> elements and before the <tfoot>, <tbody>, and <tr> elements. (You can use only one <thead> tag inside <table>).
Note, that the <tfoot> tag must be placed before <tbody>, so that the browser can render the table footer correctly.
The <thead> must contain at least one <tr> element.
The <thead>, <tbody>, and <tfoot> elements do not affect the table layout by default. Use CSS properties to customize the look of the table.
Syntax
Syntax （语法）
The <thead> tag comes in pairs. The content is written between the opening (<thead>) and closing (</thead>) tags.
<table>
<thead>
<tr>
<td> ... </td>
</tr>
</thead>
<tfoot> ... </tfoot>
<tbody> ... </tbody>
</table>
Example of the HTML <thead> tag:
<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
table {
width: 80%;
margin: 30px auto;
border-collapse: collapse;
}
thead {
background-color: #1c87c9;
color: #ffffff;
}
th,
（th）
td {
padding: 10px;
border: 1px solid #666666;
}
</style>
</head>
<body>
<table>
<thead>
<tr>
<th>Month</th>
<th>Savings</th>
</tr>
</thead>
<tfoot>
<tr>
<td>Total</td>
<td>1500</td>
</tr>
</tfoot>
<tbody>
<tr>
<td>January</td>
<td>500</td>
</tr>
<tr>
<td>February</td>
<td>1000</td>
</tr>
</tbody>
</table>
</body>
</html>
Result
Attributes
Attributes （属性）
| Attribute | Values | Description |
|---|---|---|
| align | right |
left
（左）
center
（中心）
justify
（v.辨明 ,认为无罪）
char|Specifies the alignment of the content inside a \<thead> element.
Not supported in HTML5| |bgcolor|bgcolor|Sets the background color of the rows inside a <thead> element.
Not supported in HTML5| |char|character|Specifies the alignment of the content inside a <thead> element to a character. It is used only when the attribute is align=“char”.
Not supported in HTML5.| |charoff|number|Specifies the number of characters the content inside the <thead> element will be aligned from the character specified by the char attribute. It is used only when the attribute is align=“char”. （仅当属性为align = “char"时才使用。）
Not supported in HTML5.| |valign|top
bottom
（底部）
middle
（中 ,中间）
baseline|Specifies a vertical alignment of the content inside a \<tbody> element.
Not supported in HTML5.|
The <thead> tag supports the Global Attributes and the Event Attributes.
How to style <thead> tag? Common properties to alter the visual weight/emphasis/size of text in <thead> tag:
CSS font-style property sets the style of the font. normal | italic | oblique | initial | inherit. CSS font-family property specifies a prioritized list of one or more font family names and/or generic family names for the selected element. CSS font-size property sets the size of the font. CSS font-weight property defines whether the font should be bold or thick. CSS text-transform property controls text case and capitalization. CSS text-decoration property specifies the decoration added to text, and is a shorthand property for text-decoration-line, text-decoration-color, text-decoration-style.
Coloring text in <thead> tag:
CSS color property describes the color of the text content and text decorations. CSS background-color property sets the background color of an element.
Text layout styles for <thead> tag:
CSS text-indent property specifies the indentation of the first line in a text block. CSS text-overflow property specifies how overflowed content that is not displayed should be signalled to the user. CSS white-space property specifies how white-space inside an element is handled. CSS word-break property specifies where the lines should be broken.
Other properties worth looking at for <thead> tag:
CSS text-shadow property adds shadow to text. CSS text-align-last property sets the alignment of the last line of the text. CSS line-height property specifies the height of a line. CSS letter-spacing property defines the spaces between letters/characters in a text. CSS word-spacing property sets the spacing between words.