normalize-space
The normalize-space function strips leading and trailing white-space from a string, replaces sequences of whitespace characters by a single space, and returns the resulting string.
Syntax
normalize-space( [string] )
Parameters
string(optional)-
The string to be normalized. If omitted, string used will be the same as the context node converted to a string.
Return value
The normalized string.
Specifications
Gecko support
Supported.