Question

How can I get the target from the with td rowspan=4

Not sure about:

$("#fromTd").parent("tr").next().eq($("#fromTd").attr("rowspan")-1)


<table>
   <tr>...</tr>
   <tr>...</tr>
   <tr><td id="fromTd" rowspan="4"></td></tr>
   <tr>...</tr>
   <tr>...</tr>
   <tr>...</tr>
   <tr>...</tr> -> target (can be aleatory position..)
</table>

Answer 1

Correct me if I am wrong but it sounds like what you want is to get the next <tr> after X rows where X is the rowspan of a given <td> – 1. In other words, you want the next row into which that <td> will NOT extend.

If that is the case, this should do the trick:

var eq = $("#fromTd").attr("rowspan") - 1;
var row = $("#fromTd").parent("tr").nextAll(':eq(' + eq + ')');

Here’s a live demo: http://jsfiddle.net/wLPA9/