11. The ____ method returns the position number in a string of the first instance of the first character in the pattern argument.

a.charAt(pattern)b.indexOf(pattern)

c.slice(pattern)d.search(pattern)

12. The ____ method of the String class returns the position number in a string of the first character in the argument.

a.search()b.charAt()

c.indexOf()d.substring()

13. The JavaScript String class includes the ____ method, which creates a new string by combining strings that are passed as arguments.

a.strcpy()b.strcat()

c.strpst()d.concat()

14. The ____ object contains methods and properties for working with regular expressions in JavaScript.

a.Expressionb.RegExp

c.StrExpd.StringExp

15. Regular expression patterns consist of literal characters and ____.

a.metacharactersb.metadata

c.metabytesd.supercharacters

16. A pattern that matches the beginning or end of a line is called a(n) ____.

a.tailb.metacharacter

c.metastringd.anchor

17. Characters contained in a set of parentheses within a regular expression are referred to as a subexpression or ____.

a.subpatternb.substring

c.subruled.subset

18. You use ____ classes in regular expressions to treat multiple characters as a single item.

a.expressionb.character

c.patternd.metarule

19. To allow a string to contain an alternate set of substrings, you separate the strings in a regular expression pattern with the ____ metacharacter.

a.$b./

c.|d.&

20. To manipulate arrays in your scripts, you use the methods and length property of the ____ class.

a.Arrayb.String

c.Matrixd.Vector