Get index of the specific td in tr by XPath

Question

I have thead and tbody in the table. Thead contains a few s in . Each of it have an id. I need to find the index of td in thead by id and then find by index in tbody.

<table>
  <thead>
   <tr>
     <td data-date="2019-08-05"></td>
     <td data-date="2019-08-06"></td> //find index of this element
     <td data-date="2019-08-07"></td>
   </tr>
  </thead>
  <tbody>
   <tr>
    <td>aaa</td>
    <td>bbb</td> //find this element by found index
    <td>ccc</td>
   </tr>
  </tbody>
</table>
 upd
<table>
  <thead>
   <tr>
     <td data-date="2019-08-05"></td>
     <td data-date="2019-08-06"></td> 
     <td data-date="2019-08-07"></td> 
     <td data-date="2019-08-08"></td> //find index of this element
     <td data-date="2019-08-09"></td>
   </tr>
  </thead>
  <tbody>
   <tr>
    <td rowspan="2"></td>
    <td rowspan="2" class="rrrr">event1 2019-08-06</td>
    <td class="rrrr">event1 2019-08-07</td>
    <td class="rrrr"event1 2019-08-08</td> //find this element by found index
    <td rowspan="2"></td>
   </tr>
   <tr>
    <td class="rrrr">event2 2019-08-07</td>
    <td class="rrrr">event2 2019-08-08</td> //find this element by found index
   </tr>
  </tbody>
</table>

Is the index of ` ` inside `tr` in `thead` always equal to its `id` value (both are '2', in this case) or is it a coincidence? — Jack Fleeting, Aug 30 '19 at 14:25
Got it; I would recommend you edit your question to change the `id` values to some other random characters, just to clarify. — Jack Fleeting, Aug 30 '19 at 14:34
I edited your code a bit for more clarity; see answer below. — Jack Fleeting, Aug 30 '19 at 14:57

score 3 · Accepted Answer · answered Aug 30 '19 at 14:57

3

This xpath expression

//tbody//td[count(//thead//td[@data-date='2019-08-06']/preceding-sibling::*)+1]

selects

<td>bbb</td>

answered Aug 30 '19 at 14:57

Jack Fleeting

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@DebanjanB - Thank you; much appreciated, especially coming from you! – Jack Fleeting Aug 30 '19 at 16:09
@JackFleeting, Hi again, after some upd of code, i have td. this tag can have rowspan and can not have it, but always have class "rrr". I need to find tds with same attributes(with rowspan or not) and then find by index find td in the next tr by this index. please, help – John Brewer Sep 02 '19 at 11:41
@JohnBrewer - I'm not sure are entirely understand your comment, but as a general SO policy, you should post a new question with the new, updated code, so more people can see it. – Jack Fleeting Sep 02 '19 at 12:59
@JackFleeting Ok, done, link to this question https://stackoverflow.com/questions/57757779/get-second-event-from-fullcalendar-by-xpath – John Brewer Sep 02 '19 at 13:25

Get index of the specific td in tr by XPath

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