syntax:

Clib.strspn(str, chrSet)

where:

str - string to be searched.

chrSet - set of characters to search for.

return:

number - the offset or index into str of the first character that is not in chrSet.

description:

This method searches a string for any characters that are not in chrSet, and returns the offset of the first instance of such a character. If all characters in str are also in chrSet, the return is the length of string.

see:

Clib.strcspn()