json

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JSON: JavaScript Object Notation

Lightweight text data exchange format.

Why JSON?
More concise;
No end tags;
Faster read/write ability than XML

Syntax
Data stores in Key/Value pair;
Data is splitted by comma;
Brace stores object;
Bracket stores array;

Values
Number:

1
{ "age":30 }

String

Boolean:

1
{ "flag":true }

Array:

1
2
3
4
5
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{
  "sites": [
    { "name":"菜鸟教程" , "url":"www.runoob.com" }, 
    { "name":"google" , "url":"www.google.com" }, 
    { "name":"微博" , "url":"www.weibo.com" }
  ]
}

Object:

1
{ "name":"Tutorials" , "url":"www.google.com" }

null:

{ "runoob":null }