1. line 1, char 13: Strings must use singlequote. 2. line 1, char 1: Missing semicolon. 3. line 3, char 9: Missing name in function declaration. 4. line 9, char 1: 'c' is not defined. 5. line 3, char 1: 'undefined' is defined but never used. 6. line 7, char 5: 'a' is defined but never used. 7. line 7, char 8: 'b' is defined but never used. 8. line 3, char 10: 'a' is defined but never used.