How to use XPath contains() for specific text?

Be careful of the contains() function.

It is a common mistake to use it to test if an element contains a value. What it really does is test if a string contains a substring. So, td[contains(.,'8')] takes the string value of td (.) and tests if it contains any '8' substrings. This might be what you want, but often it is not.

This XPath,

//td[.='8']

will select all td elements whose string-value equals 8.

Alternatively, this XPath,

//td[normalize-space()='8']

will select all td elements whose normalize-space() string-value equals 8. (The normalize-space() XPath function strips leading and trailing whitespace and replaces sequences of whitespace characters with a single space.)

Notes:

• Both will work even if the 8 is inside of another element such as aa, b, span, div, etc.
• Both will not match <td>gr8t</td>, <td>123456789</td>, etc.
• Using normalize-space() will ignore leading or trailing whitespacesurrounding the 8.

Try the following xpath, which will select the whole text contents rather than partial matches:

//table//td[text()='8']

Edit: Your example HTML has a tags inside the td elements, so the following will work:

//table//td/a[text()="8"]

See example in php here: https://3v4l.org/56SBn