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This article mainly talks about "what are the differences between ajax and nodejs". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn "what's the difference between ajax and nodejs?"

Differences: 1, Ajax is a client technology, while Node.js is a JavaScript running environment, a development platform; 2, Node is not executed in the browser, while Ajax is executed in the browser; 3, node mainly provides background services, while ajax is mainly used to request and send data in the front and background.

This tutorial operating environment: windows7 system, nodejs version 12.19.0, DELL G3 computer.

The difference between ajax and nodejs

Difference one:

Ajax (short for Asynchronous Javascript and XML) is a client-side technology that is usually used to update page content without refreshing it.

Node.js is a server-side Javascript, a JavaScript running environment based on Chrome V8 engine, and a development platform that allows JavaScript to run on the server side.

Difference two:

Node.js is not executed in the browser, but by the server. Ajax is executed in the browser.

Difference 3:

Node mainly provides background services, while ajax is mainly used to request and send data in the foreground and background.

Introduction to AJAX

AJAX means "Asynchronous JavaScript and XML" (asynchronous JavaScript and XML). AJAX is not an acronym, but a noun coined by Jesse James Gaiiett, which refers to a web page development technology for creating interactive web applications.

Ajax is a combination of Java technology, XML and JavaScript programming technology, which allows developers to build Web applications based on Java technology, and break the management of using page reloading.

Ajax technology uses asynchronous HTTP requests to transfer data between Browser and Web Server, so that Browser updates only part of the page content without reloading the whole page.

Ajax is a Web application development method that uses client script to exchange data with Web servers. In this way, the Web page can be updated dynamically without interrupting the interaction process for re-tailoring. With Ajax, users can create a direct, highly available, richer, and more dynamic Web user interface close to local desktop applications.

Introduction to nodejs

Node.js is a JavaScript running environment based on Chrome V8 engine and a development platform for JavaScript to run on the server side. It makes JavaScript a scripting language on a par with server-side languages such as PHP, Python, Perl, Ruby and so on.

Node optimizes some special use cases to provide an alternative API to make V8 run better in a non-browser environment. The V8 engine executes Javascript very fast and the performance is very good.

Node is a platform based on Chrome JavaScript runtime, which is used to build network applications with fast response and easy to expand. Node uses event-driven, non-blocking Istroke O model to make it lightweight and efficient, which is very suitable for running data-intensive real-time applications on distributed devices.

What kind of applications is Node.js suitable for development?

I am good at calculating, but not good at calculating. Because Node.js is good at task scheduling, if your business has a lot of CPU computing, which actually blocks this single thread, it is not suitable for Node development.

Node.js is a good fit when an application needs to handle a large number of concurrent Icano and there is no need for very complex processing within the application before sending a response to the client. Node.js is also very suitable for working with web socket to develop long-connected real-time interactive applications.

Node.js is not an independent language, unlike PHP, JSP, Python, Perl, Ruby, which is both a language and a platform, Node.js uses JavaScript for programming and runs on the JavaScript engine (V8).

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