1. var somestring= new String()	defines an empty string
2. var otherstring= new String("How is your day going?")	defines a string with an intial value
3. string1.toUpperCase() converts string1 to all upper case	string1
	string1.toUpperCase()
4. string1.toLowerCase() converts string1 to all lower case	string1
	string1.toLowerCase()
5. string1.italics() converts string1 to italics	string1
	string1.italics()
6. string1.indexOf(string2) returns first character position of string2 within string1	substring	string1
	string.indexOf(substring)
7. string1.replace(first_string, second_string) replaces first string with second string	string1
	first string	second string