What does the html col tag mean? Introduction to usage examples of html col tag-HTML Tutorial-php.cn

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What does the html col tag mean? Introduction to usage examples of html col tag

寻∝梦

Aug 21, 2018 pm 02:18 PM

html

html col标签是什么意思?col标签是规定了元素内部的每一列的列属性。对于大多或者全部列应用样式，html col标签很有用的，因为有了它就不需要对各个单元和各行重复的应用一样的样式了，虽然html col标签的属性大多被html5给取消了，但不可否认，col标签存在是还有价值的。下面就让我们来看看html col标签的定义和使用的方法吧

html col标签的定义和用法：

标签为表格中一个或多个列定义属性值。

如需对全部列应用样式，标签很有用，这样就不需要对各个单元和各行重复应用样式了。

您只能在 table 或 colgroup 元素中使用标签。

HTML 标签实例：

col 元素为表格中的三个列规定了不同的对齐方式：

<table width="100%" border="1">
  <col />
  <col />
  <col />
  <tr>
    <th>ISBN</th>
    <th>Title</th>
    <th>Price</th>
  </tr>
  <tr>
    <td>3476896</td>
    <td>My first HTML</td>
    <td>$53</td>
  </tr>
</table>

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在html中，html标签是用来为表格中一个或多个列定义属性值，只能在

或标签中使用。

html

标签的属性介绍：

align ：水平对齐方式。
char：根据哪个字符来对齐与

元素相关的内容。

charoff：第一个对齐字符的偏移量，html5不支持。

span：横跨的列数，html5不支持。

valign：垂直对齐方式，html5不支持。

width：宽，html5不支持。

html

标签的格式：

使用实例：

<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>html< col>表格属性标签_PHP笔记</title>
</head>
<body style="font-size:28px;">
<table width="450" border="1">
<col style="background:red">
<col style="background:yellow">
<tr><th>姓名</th><th>成绩</th></tr>
<tr><td>张三</td> <td>50</td></tr>
<tr><td>李四</td><td>90</td></tr>
</table>
</body>
</html>

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HTML 与 XHTML 之间的差异

在 HTML 中，

没有结束标签。

在 XHTML 中，

标签必须被正确的关闭。

提示和注释：

提示：请为

标签添加 class 属性。这样就可以使用 CSS 来负责对齐方式、宽度和颜色等等。

提示：如果您希望在 colgroup 内部为每个列规定不同的属性值时，请使用此元素。如果没有 col 元素，列会从 colgroup 那里继承所有的属性值。

注释：col 元素是仅包含属性的空元素。如需创建列，您就必须在 tr 元素内部规定 td 元素。

好了，以上就是关于html col标签的定义和使用实例了，如果有问题，欢迎在下面留言。

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