Using jQuery, how can I find the column index of an arbitrary table cell in the example table below, such that cells spanning multiple columns have multiple indexes?
<table>
<tbody>
<tr>
<td>One</td>
<td>Two</td>
<td id="example1">Three</td>
<td>Four</td>
<td>Five</td>
<td>Six</td>
</tr>
<tr>
<td colspan="2">One</td>
<td colspan="2">Two</td>
<td colspan="2" id="example2">Three</td>
</tr>
<tr>
<td>One</td>
<td>Two</td>
<td>Three</td>
<td>Four</td>
<td>Five</td>
<td>Six</td>
</tr>
</tbody>
</table>
var cell = $("#example1");
var example1ColIndex = cell.parent("tr").children().index(cell);
// == 2. This is fine.
cell = $("#example2");
var example2ColumnIndex = cell.parent("tr").children().index(cell);
// == 2. It should be 4 (or 5, but I only need the lowest). How can I do this?
Here's a plugin which can calculate the 'noncolspan' index.
$(document).ready(
function()
{
console.log($('#example2').getNonColSpanIndex()); //logs 4
console.log($('#example1').getNonColSpanIndex()); //logs 2
}
);
$.fn.getNonColSpanIndex = function() {
if(! $(this).is('td') && ! $(this).is('th'))
return -1;
var allCells = this.parent('tr').children();
var normalIndex = allCells.index(this);
var nonColSpanIndex = 0;
allCells.each(
function(i, item)
{
if(i == normalIndex)
return false;
var colspan = $(this).attr('colspan');
colspan = colspan ? parseInt(colspan) : 1;
nonColSpanIndex += colspan;
}
);
return nonColSpanIndex;
};
Mine is quite similar to SolutionYogi's, minus the creation of a plugin. It took me a bit longer... but I'm still proud of it so here it is :)
cell = $("#example2");
var example2ColumnIndex2 = 0;
cell.parent("tr").children().each(function () {
if(cell.get(0) != this){
var colIncrementor = $(this).attr("colspan");
colIncrementor = colIncrementor ? colIncrementor : 1;
example2ColumnIndex2 += parseInt(colIncrementor);
}
});
console.log(example2ColumnIndex2);
There is a more concise answer here: Get Index of a td considering the colspan using jquery
In short:
var index = 0;
$("#example2").prevAll("td").each(function() {
index += this.colSpan;
});
console.log(index);
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