- JSON是一种格式，基于文本，优于轻量，用于交换数据
- 规范 http://json.org/
- object
- {}
- { members }
- members
- pair
- pair , members
- pair
- string : value
- array
- []
- [ elements ]
- elements
- value
- value , elements
- value
- string
- number
- object
- array
- true
- false
- null
- string
- “”
- " chars "
- chars
- char
- char chars
- char
- any-Unicode-character-except-“-or--or-control-character
- "
- \
- /
- our-hex-digits
- number
- int
- int frac
- int exp
- int frac exp
- int
- digit
- digit1-9 digits
- -digit
- -digit1-9 digits
- frac
- [0]. digits
- exp
- e digits
- digits
- digit
- digit digits
- e
- e
- e+
- e-
- E
- E+
- E-
