A brief discussion on JSON.parse() and JSON.stringify()_javascript techniques

1.parse is used to parse a json object from a string. For example

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

Get via JSON.parse(str):

Object: age:"23"

      name:"cpf"

      _proto_:Object

ps: single quotes are written outside {}, and each attribute must be double quoted, otherwise an exception will be thrown

2.stringify is used to parse a string from an object, such as

var a={a:1,b:2}

Get via JSON.stringify(a):

"{"a":1,"b":2}"

JSON.stringify, this function is mainly used to serialize objects. (Or convert the original object into a string, such as a json object):

First define a json object, var jsonObject = { "UserID": "1", "UserName": "xiaozhang" };

Use alert(jsonObject) to pop up and display:

[Object Object]

Then call JSON.stringify to convert the json object into a json string.

var jsontext = JSON.stringify(jsonObject);
 alert(jsontext)；

is displayed as follows:

{ "UserID": "1", "UserName": "xiaozhang" }

2. jQuery.parseJSON, converts a JSON string into a JSON object (JSON.parse also parses a json string into a json object), as shown below

First define a JSON string, var c = '{"name":"Mike","sex":"male","age":"29"}'; (Note: single quotes are written in {} In addition, each attribute name must be enclosed in double quotes, otherwise an exception will be thrown )

.

Then call jQuery.parseJSON to convert it to a JSON object,

var employeejson=jQuery.parseJSON(c);

When accessing, use employeejson.name, employeejson.sex, employeejson.age to get the corresponding value

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