JSON.stringify与JSON.parse

 

JSON.stringify(value [, replacer] [, space]) 

　　Used to convert object --> JSON string.

1. value : object, array, class
2. replacer:

　　　　When the array: value exists, then the value of the second parameter is used as the key, and the value of the first parameter is represented by the value. If it does not exist, it is ignored.

　　　　Method: Pass each serialized object (remember each one) into the method for processing.

　　  3. space : Separator. If not, it will be output directly; if it is a number, it will define a few characters of indentation; the escape character \t means carriage return

 

Function :

　　For example, the background data returns: {"code": -1, "msg": "System exception"}

　　Without stringify, display: [object, object]

 

JSON.parse()：

　　string --> json object

　　var str = '{ "name":"huangxiaojian","age":23}'

　　transform into

　　{

　　　　name: 'huangxiaojian',

　　　　age: 23

　　}