AJAX - The Complete Reference

Chapter 4: Data Formats 133

PART I

string

number

object

array

true

false

null

value

Looking closely at a string, you can see that it must be wrapped in double quotes and

that special characters must be escaped as they would be in JavaScript or C.

string

Any UNICODE character except

” or \ or control character

“ ”

\ ”

\ / b f n r t u

quotation mark

reverse solidus

solidus

backspace

formfeed

newline

carriage return

horizontal tab

4 hexadecimal digits

The following are legal strings in JSON:

""

" "

"A"

"Behold I am a string!"

"You need to escape special characters like so \" \\ \/ \b \f \n \r \t"

"Unicode is great - \u044D"

The number format is similar to the JavaScript number format, but the octal and

hexadecimal formats are not used. This makes sense, given that the format is used for

interchange rather than programming that should concern itself with memory.

number

digit

digit

digit

1–9

−

+

−

0.

e

E

digit