What are the differences between websocket and ajax
This article mainly shows you "what is the difference between websocket and ajax". It is easy to understand and clear. I hope it can help you solve your doubts. Let the editor lead you to study and learn the article "what is the difference between websocket and ajax".
Differences: 1, ajax is a development technology for creating interactive applications, websocket is a protocol used to realize full-duplex communication between browser and server; 2, ajax establishes short connection, websocket establishes long link; 3, ajax is used for non-real-time data exchange, websocket is used for real-time data exchange.
The operating environment of this tutorial: windows10 system, jquery3.2.1 version, Dell G3 computer.
1. The essence is different.
Ajax, namely Asynchronous JavaScript and XML, is a web page development technology for creating interactive web applications.
WebSocket is a new protocol of HTML5, which realizes full-duplex communication between browser and server. Its essence is to shake hands through the HTTP/HTTPS protocol and then create a TCP connection for exchanging data, and the server communicates with the client in real time through this TCP connection.
two。 The life cycle is different.
Websocket establishes a persistent connection, which remains connected throughout a session, while ajax is a short connection, which is disconnected after the data is sent and accepted.
3. Different scope of application
Websocket is generally used for real-time data exchange between front and back end, but not real-time data exchange at front and back end of ajax.
4. The sponsors are different.
Ajax technology requires the client to initiate a request (the data users who request it can see it for themselves), while the WebSocket server and the client can push information to each other. (user A requests to return something A user can see B user can also see; if it belongs to the public, then everyone can see
5. Usage is different
Ajax
$.Ajax ({type: "post", url: "http://localhost:8080/target",data:"state = yes", dataType: "json", success:funciont (data) {}})
Websocket
Var monitor = new WebSocket ("ws://" + ip+path) onOpen (), onMessage (), onClose () are all the contents of this article entitled "what's the difference between websocket and ajax". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!
