isBlank

Returns true if the provided value is either null or is an empty string or a string that consists only of white space (spaces, tabs, carriage returns, and new-line characters).


RecordPath	Return value
`/name[isBlank(/details/employer)]`	John Doe
`/name[isBlank(/details/vehicle)]`	John Doe
`/name[isBlank(/details/phase)]`	John Doe
`/name[isBlank(.)]`	<returns no results>