The problem of conversion between JS object and JSON object

We often encounter the problem of switching D between JS objects and JSON data in the development of the system, especially when using AJAX technology. In fact, that is two problems: JS object conversion into JSON format data, JSON format data conversion into JS objects

The current project data interaction is almost all in jquery, so the process is: front-end page data-"JS Object-" jquery Commit-"python processing, the other is the reverse." Python must not directly deal with JS object data, so to convert the JS object into a python can handle a data format (usually the dictionary dict), the same, Python data feed back to the front-end also to the dictionary data into JS can handle the object, This intermediate conversion data format is usually JSON.

One, JS object conversion into JSON

Process: Reads the front-end page data, assembles it into a JS object, and passes it to Python via the $.post () method of jquery.

Processing: Refers to a json2.js file and calls the Json.stringify () method.

For example:

var data = new OB ject ();

var json_data = json.stringify (data);

READ: Python here is very simple, with dict_data = Json.loads (json_data) on the OK

Two, JSON conversion into JS

Process: Python assembles a dict data and passes it to the front end in JSON format, or the front end reads this JSON-formatted data directly through the $.getjson () method of jquery

Processing: Using a method of jquery $.parsejson () converts JSON-formatted data into a JS object.

For example:

var json_data = $.getjson ();

var data = $.parsejson (Json_data);

READ: JS to the image of the operation will not have to say more

Here, Python converts the dictionary into JSON-formatted data, using the Json.dumps () method.

PS:json2.js This file can be downloaded by searching the Internet.