contains
XSLT/XPath Reference: XSLT elements, EXSLT functions, XPath functions, XPath axesThe contains function determines whether the first argument string contains the second argument string and returns boolean true or false.
Syntax
contains(haystack, needle)
Arguments
haystack-
The string to be searched
needle-
The string to look for as a substring of
haystack
Returns
true if haystack contains needle. Otherwise, false.
Defined
Gecko support
Supported.
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https://developer.mozilla.org/en-US/docs/Web/XPath/Functions/contains