Question

Here’s the HTML:

<a href="https://i3.student.gototraining.com/rt/7762640392746015488" 
         id="registrationURL" target="_blank" class=" xh-highlight">
    https://i3.student.gototraining.com/rt/7762640392746015488</a>

So for this URL: https://qa4.test.host.com/rt/7762640392746015488

I would like the xpath expression to return: 7762640392746015488

Thanks and much appreciated!

Answer 1

Use the following expression to extract the final $n characters from $str:

substring($str, string-length($str) - $n - 1);  

Substituting your exact values (without knowing more about the location of the target a):

substring((//a[@id='registrationURL'])[1], 
          string-length((//a[@id='registrationURL'])[1]) - 18)

Output:

7762640392746015488