看这里
http://www.w3.org/TR/CSS21/tables.html#columns
您只能设置border
, background
,width
和svisibility
col
编辑
jQuery解决方案
使用这个小的 jQuery 片段,您可以将标签中的所有类名复制col
到相应的td
标签中。它甚至适用于和标签中
的 colspan以及嵌套表。col
td
这里的例子是 jsfiddle
JavaScript
$(document).ready(function() {
var find_TDs_at_COL = function(table, col) {
var ret = [];
$(table).children('tbody').children('tr').each(function() {
var col2 = 0;
$(this).children('td,th').each(function() {
oldCol2 = col2;
if ($(this).attr('colspan')) {
col2 += parseInt($(this).attr('colspan'));
} else {
col2++;
}
if (oldCol2 <= col && col2 > col) {
ret.push(this);
}
})
})
return $(ret);
}
$('table > colgroup').each(function() {
var $table = $(this).parent();
var col = 0;
$(this).children('col').each(function() {
var oldCol = col
if ($(this).attr('colspan')) {
col += parseInt($(this).attr('colspan'))
} else {
col++;
}
for (var i = oldCol; i < col; i++) {
find_TDs_at_COL($table, i).addClass($(this).attr('class'))
}
})
})
})
console.clear()
$(document).ready(function() {
"use strict";
var find_TDs_at_COL = function(table, col) {
var ret = [];
$(table).children('tbody').children('tr').each(function() {
var col2 = 0;
$(this).children('td,th').each(function() {
var oldCol2 = col2;
if ($(this).attr('colspan')) {
col2 += parseInt($(this).attr('colspan'));
} else {
col2++;
}
if (oldCol2 <= col && col2 > col) {
ret.push(this);
}
})
})
return $(ret);
}
$('table > colgroup').each(function() {
var $table = $(this).parent();
var col = 0;
$(this).children('col').each(function() {
var oldCol = col
var that = this
if ($(this).attr('colspan')) {
col += parseInt($(this).attr('colspan'))
} else {
col++;
}
for (var i = oldCol; i < col; i++) {
find_TDs_at_COL($table, i)
.addClass($(this).attr('class'))
// copy style as well
// .each(function() {
// const [ ...style ] = that.style
// for ( let r of style ) {
// this.style[r] = that.style[r]
// }
//})
}
})
})
})
.left-info
{
font-size:14px;
font-family:Tahoma, Helvetica, sans-serif;
color:#1A5B71;
font-weight:bold;
text-align:right;
}
.right-info
{
font-size:14px;
font-family:Tahoma, Helvetica, sans-serif;
color:#00FFFF;
font-weight:bold;
text-align:left;
}
.extra-info {
font-size:14px;
font-family:Tahoma, Helvetica, sans-serif;
color:#ff0000;
font-style: italic;
text-align:right;
}
.additional-info {
font-size:10px;
font-family:Tahoma, Helvetica, sans-serif;
color:#ffdd00;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table border="1">
<colgroup>
<col class="left-info" />
<col class="right-info" />
<col class="extra-info" colspan="3"/>
<col class="additional-info"/>
<col />
</colgroup>
<tr>
<th>A</th>
<th>B</th>
<th>C</th>
<th>C</th>
<th>C</th>
<th>D</th>
</tr>
<tr>
<td>3476896</td>
<td>My first HTML</td>
<td></td>
<td>Extra</td>
<td>Yes</td>
<td>Add</td>
</tr>
<tr>
<td>5869207</td>
<td>My first CSS</td>
<td>Ugh</td>
<td colspan="2"></td>
<td>Don't trust</td>
</tr>
<tr>
<td>54379</td>
<td>My first JS</td>
<td colspan="2">Trust</td>
</tr>
</table>
VanillaJS 解决方案
{
"use strict";
document.addEventListener('DOMContentLoaded', e => {
Array.from(document.querySelectorAll('table > colgroup')).forEach(cg => {
const table = cg.parentElement
let col = 0
Array.from(cg.querySelectorAll(':scope > col')).forEach(c => {
const oldCol = col
if (c.getAttribute('colspan')) {
col += +c.getAttribute('colspan')
} else {
col++
}
for (let i = oldCol; i < col; i++) {
find_TDs_at_COL(table, i).forEach(el => {
Array.from(c.classList).forEach(c => el.classList.add(c))
})
}
})
})
})
const find_TDs_at_COL = (table, col) => {
let ret = [];
Array.from(table.querySelectorAll(':scope > tbody > tr')).forEach(tr => {
let col2 = 0
Array.from(tr.querySelectorAll(':scope > td, :scope > th')).forEach(tc => {
const oldCol2 = col2
if (tc.getAttribute('colspan')) {
col2 += +tc.getAttribute('colspan')
} else {
col2++
}
if (oldCol2 <= col && col2 > col) {
ret.push(tc);
}
})
})
return ret
}
}
.left-info
{
font-size:14px;
font-family:Tahoma, Helvetica, sans-serif;
color:#1A5B71;
font-weight:bold;
text-align:right;
}
.right-info
{
font-size:14px;
font-family:Tahoma, Helvetica, sans-serif;
color:#00FFFF;
font-weight:bold;
text-align:left;
}
.extra-info {
font-size:24px;
font-family:Tahoma, Helvetica, sans-serif;
color:#ff0000;
font-style: italic;
text-align:right;
}
.additional-info {
font-size:10px;
font-family:Tahoma, Helvetica, sans-serif;
color:#ffdd00;
}
.shadow {
text-shadow: 2px 2px 0 black
}
.info {
text-decoration: overline;
}
<table border="1">
<colgroup>
<col class="left-info" />
<col class="right-info shadow info" />
<col class="extra-info" colspan="3"/>
<col class="additional-info"/>
<col />
</colgroup>
<tr>
<th>A</th>
<th>B</th>
<th>C</th>
<th>C</th>
<th>C</th>
<th>D</th>
</tr>
<tr>
<td>3476896</td>
<td>My first HTML</td>
<td></td>
<td>Extra</td>
<td>Yes</td>
<td>Add</td>
</tr>
<tr>
<td>5869207</td>
<td>My first CSS</td>
<td>Ugh</td>
<td colspan="2"></td>
<td>Don't trust</td>
</tr>
<tr>
<td>54379</td>
<td>My first JS</td>
<td colspan="2">Trust</td>
</tr>
</table>
<br><hr><br>
<table border="1">
<colgroup>
<col class="right-info" />
<col class="left-info" />
<col class="additional-info"/>
<col class="extra-info shadow" colspan="3"/>
<col />
</colgroup>
<tr>
<th>A</th>
<th>B</th>
<th>C</th>
<th>C</th>
<th>C</th>
<th>D</th>
</tr>
<tr>
<td>3476896</td>
<td>My first HTML</td>
<td></td>
<td>Extra</td>
<td>Yes</td>
<td>Add</td>
</tr>
<tr>
<td>5869207</td>
<td>My first CSS</td>
<td>Ugh</td>
<td colspan="2"></td>
<td>Don't trust</td>
</tr>
<tr>
<td>54379</td>
<td>My first JS</td>
<td colspan="2">Trust</td>
</tr>
</table>