JSON, Jsonarray and Jsonobject

As with XML, JSON is also a data format based on plain Text. Since JSON is inherently prepared for JavaScript, the JSON data format is very simple and can be used to transmit a simple string,number,boolean, or to transfer an array, or a complex object.

The basic structure of JSON is to use "{}" to wrap an object that contains a key and value separated by a colon, a comma delimited between Key-value pairs, a string to be wrapped in double quotation marks (""), and the Object's key name is always a string, and the property value enables any json-supported data type, including string, Other object types, numbers, and Boolean types (true or false), a specified null value, and an array. The JSON array is wrapped by "[]", the type of the array element can be any JSON data type (including objects and arrays), and the array elements are separated by ",".

{"total": 3,"rows":[   {   "userId": 1,   "realname": "zhang mei",   "headurl": "href= ' teacherdetail.html '",   "img": "src= ' images/teacher.jpg '",   "introduction": "warm and generous." "   },{   "userId": 2,   "realname": "zhang san",   "headurl": "href= ' teacherdetail.html '",   "img": "src= ' images/teacher.jpg '",   "introduction": "warm and generous." "   },{   "userId": 3,   "realname": "reese",   "headurl": "href= ' teacherdetail.html '",   "img": "src= ' images/teacher.jpg '",   "introduction": "warm and generous"   }]}

The $.getjson () method function in jquery is primarily used to load json-encoded data from the server, which uses a get HTTP Request. Here's How to use It:

$.getjson (url,[data], [success (data, textstatus, jqxhr)])

The URL is a required parameter that represents the address of the JSON data;
Data is an optional parameter that is used to send parameters when data is requested;
Success is a parameter, which is a callback function that is used to process the requested Data.

Get JSON data for example:

$.getjson (' Test.json ', function (data) {   for(var i = 0; i < data.rows.length; i++) {      $ ( /c4> ' #test '). append (' <p> ' + data.rows[i].realname + ' </p> ');}   );

Jsonobject and Jsonarray

The difference is that Jsonobject is a {} wrapped object,
The Jsonarray is an array of [] Packages.
The white point is an array, an object or a string.
JSONOBJEC has a key name, Jsonarray Not.

JSON, jsonarray, and Jsonobject