什么是检索为受＆QUOT行的列索引的最有效的方式; ROWSPAN＆QUOT ;? [英] What is the most efficient way to retrieve the column index for rows affected by "rowspan"?
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问题描述
考虑下表：
<table>
<thead>
<tr>
<th scope="col" />
<th scope="col">A</th>
<th scope="col">B</th>
<th scope="col">C</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row">1</th>
<td>Apples</td>
<td>Oranges</td>
<td>Pears</td>
</tr>
<tr>
<th scope="row">2</th>
<td rowspan="2">Subcategory Heading</td>
<td>ASP.Net</td>
<td>Other</td>
</tr>
<tr>
<th scope="row">3</th>
<td>MVC</td>
<td>PHP</td>
</tr>
<tr>
<th scope="row">4</th>
<td>Red</td>
<td>Green</td>
<td>Blue</td>
</tr>
</tbody>
<tfoot>
<tr>
<td colspan="4">Some pointless footer content</td>
</tr>
</tfoot>
</table>
我将如何检索包含文本MVC，或使用jQueryPHP单元格中正确列数？正确的答案应该是第3列，但只是用。prevAll（）。长度将只计算previous细胞的数量，从而不能准确地反映在这种情况下，它们的实际列位置？
How would I retrieve the correct column number for the cell containing the text "MVC" or "PHP" using jQuery? The correct answer would be column 3, but just using .prevAll().length will only count the number of previous cells, which will not accurately reflect their actual column position in this case?
我敢肯定，我会需要使用每（），但我在寻找最有效的实现也是如此。
I'm sure I'll need to use each(), but I'm looking for the most efficient implementation as well.
推荐答案
这样的事情？
<!doctype html>
<table id="foo">
<thead>
<tr>
<th scope="col" />
<th scope="col">A</th>
<th scope="col">B</th>
<th scope="col">C</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row">1</th>
<td>Apples</td>
<td>Oranges</td>
<td>Pears</td>
</tr>
<tr>
<th scope="row">2</th>
<td rowspan="2">Subcategory Heading</td>
<td>ASP.Net</td>
<td>Other</td>
</tr>
<tr>
<th scope="row">3</th>
<td>MVC</td>
<td>PHP</td>
</tr>
<tr>
<th scope="row">4</th>
<td>Red</td>
<td>Green</td>
<td>Blue</td>
</tr>
</tbody>
<tfoot>
<tr>
<td colspan="4">Some pointless footer content</td>
</tr>
</tfoot>
</table>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3/jquery.min.js"></script>
<script>
var table = $('table#foo');
table.find('td[rowspan], th[rowspan]').each(function() {
var cellNum,
reference = this,
columnNum = $(this).attr('rowspan'),
parentTr = $(this).closest('tr'),
parentTrs = $(this).closest('tr').parent().find('tr');
parentTr.find('>td, >th').each(function(i,o) {
if ( this == reference ) {
cellNum = i;
var counter = columnNum;
while ( counter-- ) {
$(this).closest('tr').next().find('>td,>th').each(function(i,o) {
if ( cellNum == i ) {
$(this).addClass('rowspan-affected');
$(this).attr('colNum', columnNum);
}
});
}
}
});
/* testing
window.num = num;
window.parentTr = parentTr;
window.parentTrs = parentTrs;
*/
});
</script>
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