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This article introduces the knowledge of "whether node.js is a high-level language". Many people will encounter such a dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Node.js is not a high-level language, but a JavaScript running environment based on Chrome V8 engine. It is a development platform that allows JavaScript to run on the server, which is used to support the execution of JavaScript code and to easily build network applications with fast response and easy to expand.

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

JavaScript was born in 1995, almost at the same time as the Internet; Node.js was born in 2009, about 15 years later than JavaScript.

Before Node.js, JavaScript could only be run in a browser, used as a web script, add special effects to a web page, or communicate with the server. With Node.js, JavaScript can break away from the browser and use it directly on the computer like other programming languages. It can do whatever it wants and is no longer restricted by the browser.

Node.js is neither a new programming language nor a JavaScript framework, it is a JavaScript runtime environment based on Chrome V8 engine and a development platform that allows JavaScript to run on the server side to support the execution of JavaScript code. In programming terms, Node.js is a JavaScript runtime (Runtime).

Node.js optimizes some special use cases and provides alternative API to make V8 run better in non-browser environment. V8 engine executes Javascript very fast and has very good performance. The platform based on Chrome JavaScript runtime is used to build web applications with fast response and easy to expand.

The birth of Node.js

JavaScript's life has been accompanied by browser wars. JavaScript was released by the Netscape browser, but Netscape lost the competition with IE and no longer existed; then Google's Chrome browser sprang up and rubbed IE on the ground with its powerful performance.

Google has integrated a JavaScript engine called V8 (JavaScript interpreter) in its Chrome browser, which parses and executes JavaScript code very quickly.

The V8 engine is written in C++ language and can be run independently or embedded in any other C++ program. Google has made the V8 engine and even the entire Chrome browser open source, and anyone can apply V8 to their own projects for free.

The power of the V8 engine, and the popularity of JavaScript at that time, made a programmer named Ryan Dahl have a "crooked mind". He wanted to build a runtime for JavaScript outside the browser, so that JavaScript could run directly on the computer, so that JavaScript could be as ambitious as Python, Ruby, PHP and other scripting languages, no longer limited to browsers, and could only do small things.

Ryan Dahl and his team really did it, and they did a good job of naming this independent JavaScript runtime Node.js; to avoid being mistaken for the JavaScript framework, which is now often referred to as Node.

Advantages of Node.js

1. Front-end / back-end development uses the same language

Technologies like ASP.NET or Spring require developers to learn a new server-side language, such as Cumminary VB.NET or Java. Node.js uses JavaScript on both the server side and the client side, which means that developers only need to use one language at each layer.

2. Easy to learn and easy to transform for developers

There is a fact that JavaScript is a language familiar to Web developers, and most people know JavaScript or have used it more or less. So it's easy for a Web developer to move from other technologies to Node.js.

3. Light weight

Node.js uses an event-driven architecture, which means that everything done on it, each individual call and operation, is a series of asynchronous callbacks. This allows Node.js to run on a single thread, which is different from other Web technologies, where each client request generates a new thread to process. This is the essence of non-blocking iCompo.

4. Support NoSQL database

It is very common to use NoSQL database simplification like MongoDB in Node.js applications. MongoDB differs from traditional SQL databases in that it uses a document-based model rather than a relational model. It uses objects such as JSON instead of tables. This is perfect for ORM lovers.

5. Good IDE and code editor support

JavaScript has been around for a long time, so IDE like Visual Studio,Eclipse supports JavaScript code hints and highlights, as do code editors like NotePad++ and Sublime Text.

6. Code hosting services support a wide range of

Some Web servers and cloud service providers support Node.js 's Web applications. Let's talk about a few here, including Google,Microsoft IIS,Heroku,Microsoft Azure,Amazon (AWS) and so on.

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