node.js JSON对象和string的相互转化

JSON.stringify(obj)将JSON转为字符串。

var json = { aa: ['sdddssd'],
  bb: [ '892394829342394792399', '23894723984729374932874' ],
  cc: ['11111111111111'] }

=> var string = JSON.stringify(json)

string:

{"aa":["sdddssd"],"bb":["892394829342394792399","23894723984729374932874"],"cc":["11111111111111"]}

JSON.parse(string)将字符串转为JSON格式

JSON.parse(string):

=>

{ aa: ['sdddssd'],
  bb: [ '892394829342394792399', '23894723984729374932874' ],
  cc: ['11111111111111'] }