js json the serialization and deserialization of js json serialization and deserialization

js json the serialization and deserialization

 

(1) serialized

　　Js i.e. into a string in the Object

1. toJSONString

var last = obj.toJSONString (); // JSON object into the character JSON 

2. Use stringify

var last = JSON.stringify (obj); // JSON object into the character JSON

(2) deserialization

       I.e. JSON string into the js Object

1. Using parse

var obj = JSON.parse (data); // Converts a string to a JSON object JSON

2. Use parseJSON

var obj = data.parseJSON (); // Converts a string to a JSON object JSON

3. Use eval

var obj=eval("("+data+")");  

Why eval here to add "(" + data + ") ; //" it? 
The reason is: eval problem itself. Since json is "{}" approach to the beginning and the end, in JS, it will be processed as a block of statements, so it must be converted into a compulsory expression.

(1) serialized

　　Js i.e. into a string in the Object

1. toJSONString

var last = obj.toJSONString (); // JSON object into the character JSON 

2. Use stringify

var last = JSON.stringify (obj); // JSON object into the character JSON

(2) deserialization

       I.e. JSON string into the js Object

1. Using parse

var obj = JSON.parse (data); // Converts a string to a JSON object JSON

2. Use parseJSON

var obj = data.parseJSON (); // Converts a string to a JSON object JSON

3. Use eval

var obj=eval("("+data+")");  

Why eval here to add "(" + data + ") ; //" it? 
The reason is: eval problem itself. Since json is "{}" approach to the beginning and the end, in JS, it will be processed as a block of statements, so it must be converted into a compulsory expression.