The basic format of JSON and the conversion to JavaScript

The basic format of JSON and the conversion to JavaScript

Recently, many people have found that when writing JSON-formatted data, it is not always possible to achieve the JSON specification, although it can be passed without the language requirements being strict.

However, inevitably will encounter such a problem, the time to make changes, worried about the late, so plan to write this blog post.

Syntax rules for JSON:

1. Data needs to be written in the form of key-value pairs;

E G:

{   "name": "Zychao"  }

2, data and data need to be separated by commas;

E G:

{  "name": "Zychao",  "sex": "Male",  "age":

3. The data object needs to be covered by a pair of curly braces;

4, the ordered list of values;

E G: In the following case, the object users is an array, and each object is a user record in an array of key values.

{  "users" : [    {"firstName": "He", "LastName": "Yongqing"},    {"firstName": "Ding", "LastName": "Yingjie"},    {"fitstname": "Lucene", "LastName": "Zhang"}]}

JSON text converted to JavaScript object

We can parse the JSON string literal through the Json.parse () function and convert it to a JavaScript object.

var text = "{' users ': [" +       "{' FirstName ': ' He ', ' lastName ': ' Yongqing '}," +      "{' FirstName ': ' Ding ', ' lastName ' : ' Yingjie '} "+"]} ";

var obj = json.parse (text);

Finally, we can apply the JavaScript object to the written page.

The basic format of JSON and the conversion to JavaScript