What are nodejs and vuejs

nodejs is a JavaScript running environment based on the Chrome V8 engine. It is a development platform that allows JS to run on the server. Vue is a progressive JavaScript framework for building user interfaces. Its goal is to achieve responsive data binding and composed view components through the simplest possible API.

The operating environment of this tutorial: windows7 system, nodejs14.15.4&&vue2.9.6 version, DELL G3 computer.

What is nodejs

Node.js is a JavaScript running environment based on the Chrome V8 engine. Node.js uses an event-driven, non-blocking I/O model.

Node is a development platform that allows JavaScript to run on the server side. It makes JavaScript a scripting language on par with server-side languages ​​such as PHP, Python, Perl, and Ruby. Released in May 2009 and developed by Ryan Dahl, it essentially encapsulates the Chrome V8 engine.

Node optimizes some special use cases and provides alternative APIs to make V8 run better in non-browser environments. The V8 engine executes Javascript very quickly and has very good performance.

Node is a platform built on the Chrome JavaScript runtime, used to easily build web applications with fast response speed and easy expansion. Node uses an event-driven, non-blocking I/O model to be lightweight and efficient, making it ideal for running data-intensive real-time applications on distributed devices.

Advantages of node.js

1. Nodejs syntax is completely js syntax. As long as you understand the basics of js, you can learn Nodejs back-end development

Node breaks the past situation where JavaScript can only run in the browser. The unified front-end and back-end programming environments can greatly reduce development costs.

2. The super high concurrency capability of NodeJs

The primary goal of NodeJs is to provide a simple way to create high-performance servers and various applications that can run in the servers. development tools.

First let us take a look at what problems exist in current server-side languages. In server languages ​​such as Java, PHP or .NET, a new thread is created for each client connection. Each thread requires approximately 2MB of memory. In other words, theoretically, the maximum number of users that can be connected to a server with 8GB of memory at the same time is about 4,000. In order for a web application to support more users, the number of servers needs to be increased, and of course the hardware cost of the web application increases.

NodeJs does not create a new thread for each client connection, but only uses one thread. When a user connects, an internal event is triggered. Through non-blocking I/O and event-driven mechanisms, the Node.js program is macroscopically parallel. Using Node.js, a server with 8GB of memory can handle the connections of more than 40,000 users at the same time.

3. Implementing high-performance servers

Strictly speaking, Node.js is a development tool used to develop various web servers. In the Node.js server, the high-performance V8 JavaScript scripting language is running, which is a scripting language that can run on the server side.

What can Node.js do

##What is vuejs

Vue (pronounced /vjuː/, similar to view) is a progressive JavaScript framework for building user interfaces. Unlike other large frameworks, Vue is designed to be applied layer by layer from the bottom up. Vue's core library only focuses on the view layer, making it easy to integrate with third-party libraries or existing projects.

Vue.js is a progressive framework for building user interfaces. Unlike other heavyweight frameworks, Vue adopts a bottom-up incremental development design. Vue's core library only focuses on the view layer, and is very easy to learn and integrate with other libraries or existing projects.

On the other hand, Vue is fully capable of driving complex single-page applications developed using single-file components and libraries supported by the Vue ecosystem.

The goal of Vue.js is to enable responsive data binding and composed view components through the simplest possible API.

Vue.js itself is not a comprehensive framework - it only focuses on the view layer. Therefore it is very easy to learn and very easy to integrate with other libraries or existing projects. On the other hand, Vue.js is also perfectly capable of powering complex single-page applications when used with related tools and supporting libraries.

What are the advantages of Vue.js

What are the advantages of Vue compared to other frameworks? We have mentioned jQuery above, and there are other front-end frameworks such as React, Angular, etc. In comparison, Vue is the most lightweight and has formed a complete ecosystem that can be quickly iteratively updated.

As the preferred entry-level framework for front-end developers, Vue has many advantages:

• Vue.js can be developed in components, which greatly reduces the amount of code writing and makes readers more Easy to understand.

• The most prominent advantage of Vue.js is that it can perform two-way binding of data (we will obviously feel the convenience of this feature in subsequent writing).

• The interface effect written using Vue.js itself is responsive, which enables the web page to display very beautiful effects on various devices.

• Compared with traditional pages that use hyperlinks to switch and jump pages, Vue uses routing without refreshing the page.

Related recommendations: "vue.js tutorial", "nodejs tutorial"

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