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Editorial Team
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Asked: 2026-05-20T07:18:16+00:00

I must be overlooking something very obvious. What’s wrong with this XPath expression? I

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I must be overlooking something very obvious. What’s wrong with this XPath expression? I want to get a count of table rows which match a regex for id?

selenium.getXpathCount("//tr[matches(@id,'data-row-\\d+')]");

I’m getting:

com.thoughtworks.selenium.SeleniumException:
ERROR: Invalid xpath [2]:
//tr[matches(@id,’data-row-\d+’)]

Here’s sample html:

<table>
  <tbody>
    <tr id="data-row-0"><td>foo</td></tr>
    <tr id="data-row-1"><td>bar</td></tr>
    <tr id="data-row-2"><td>baz</td></tr>
  </tbody>
</table>
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1 Answer

  1. Editorial Team

    Selenium 1.x does not support XPath 2.0. Hence you cannot use XPath 2.0 methods like matches(), replace() etc..

    You might want to consider XPath 1.0 methods like contains(), starts-with() etc.

    Also, to achieve your goal you can try

    //tr[starts-with(@id,'data-row-') and translate(@id,'0123456789','')]

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