The difference between JSON and JSONP, the difference between Ajax and JSONP

JSON and JSONP, although there is only one letter difference, but they do not relate to each other.

JSON is a lightweight format for data interchange.

Jsonp is a cross-domain data interaction protocol.

The advantages of JSON: (1) based on plain text transmission is extremely simple, (2) Lightweight data format suitable for Internet transmission, (3) easy to write and parse.

The difference between Ajax and JSONP:

The same point: all requests a URL

Differences: The core of Ajax is getting content through XMLHttpRequest

The core of JSONP is the dynamic add <script> tag to invoke the JS script provided by the server.

The difference between JSON and JSONP, the difference between Ajax and JSONP