为什么要学习nodejs_NodeJS简介以及为什么需要学习它

为什么要学习nodejs

In the current world, developers are expected to have several different skills. Companies want multi-talented developers and many developers do.

在当前世界中，开发人员应具备几种不同的技能。 公司希望拥有多才多艺的开发人员，而许多开发人员则需要。

There are different career paths available for developers that require numerous skills. For instance, A Web developer should know HTML, CSS, JavaScript, React, or Angular or Vue, Nodejs, Expressjs, SQL, or NoSQL. Better if Web developers know UI/UX, SEO, Maintenance along with the Performance of a Website.

对于需要大量技能的开发人员而言，有不同的职业发展道路。 例如，Web开发人员应该知道HTML，CSS，JavaScript，React或Angular或Vue，Nodejs，Expressjs，SQL或NoSQL。 如果Web开发人员了解UI / UX，SEO，维护以及网站性能，那就更好了。

It’s not to demotivate you but it’s the fact. The technology is growing exponentially and perhaps what we use today may be outdated within 2 years. So the programmer has to learn various techniques to be out of the crowd. And one of the most crucial skills in this digital world is to become a Node developer or you may call it a Backend developer.

这不是要挫败您，而是事实。 该技术正呈指数级增长，也许我们今天使用的技术可能会在2年内过时。 因此，程序员必须学习各种技术才能脱颖而出。 在这个数字世界中，最关键的技能之一就是成为Node开发人员，或者您可以称其为Backend开发人员。

我可以学习后端吗？ (Can I have to Learn Backend?)

It depends on your skills. If a developer knows all aspect of Frontend and even compete with an experienced Frontend developer then no need to learn Backend.

这取决于你的技能。 如果开发人员了解Frontend的方方面面，甚至可以与经验丰富的Frontend开发人员竞争，则无需学习Backend。

I have seen many Frontend developers and UI/UX designers earning just by a single skill. Yeah, you have heard about a Full Stack developer too. So it depends on you, your desire, and all.

我已经看到许多Frontend开发人员和UI / UX设计师仅凭一种技能就能赚钱。 是的，您也听说过Full Stack开发人员。 因此，这取决于您，您的愿望以及所有。

为什么要使用Node？ (Why use Node?)

We can make a website easily by using HTML and CSS no doubt like the portfolio one right. But what about an e-commerce website where we have to manage user data, product details, and even more.

毫无疑问，我们可以通过使用HTML和CSS轻松地构建网站，就像投资组合一样。 但是，对于一个电子商务网站，我们必须管理用户数据，产品详细信息等等。

So to make a website like e-commerce we have to use Backend. And for Backend, Node is one of the great options to start. It is one of the most used backend languages in the world other than that JavaScript developer can learn it very efficiently.

因此，要使网站像电子商务一样，我们必须使用后端。 对于后端，Node是启动的绝佳选择之一。 它是世界上最常用的后端语言之一，JavaScript开发人员可以非常高效地学习它。

There are tons of definitions out there like Node.js is a free, open-sourced, cross-platform JavaScript run-time environment that lets developers write command-line tools and server-side scripts outside of a browser.

那里有大量的定义，例如Node.js是一个免费的，开源的，跨平台JavaScript运行时环境，使开发人员可以在浏览器外部编写命令行工具和服务器端脚本。

Also, JavaScript is one of the popular languages in the world right now.

而且，JavaScript是目前世界上流行的语言之一。

我们读了很多书，但是什么是Node.js？ (We have read a lot but What is Node.js?)

According to Nodejs documentation, Node.js is an open-source and cross-platform JavaScript runtime environment. It is a popular tool for almost any kind of project! Node.js runs the V8 JavaScript engine, the core of Google Chrome, outside of the browser. This allows Node.js to be very performant.

根据Nodejs文档，Node.js是一个开放源代码和跨平台JavaScript运行时环境。 它是几乎任何类型项目的流行工具！ Node.js在浏览器外部运行V8 JavaScript引擎(Google Chrome的核心)。 这使Node.js表现出色。

Simply, Node.js is an open-source, runtime environment for JavaScript that runs on the server. Node.js is only ten years old and one of the crucial runtime environments. It is a lightweight open-source platform heavily used for developing server-side web applications. We know that JavaScript is a great language for the Web and Node.js is a JavaScript runtime environment that makes it prominent in comparison to others.

简单来说，Node.js是在服务器上运行JavaScript的开源运行时环境。 Node.js成立仅十年，并且是关键的运行时环境之一。 它是一个轻量级的开源平台，大量用于开发服务器端Web应用程序。 我们知道JavaScript是Web上的一种很棒的语言，而Node.js是一种JavaScript运行时环境，与其他语言相比，它变得更加出色。

Node.js最适合： (Node.js is best suitable for:)

• Real-time web applications
  实时网络应用
• Streaming applications
  流媒体应用
• Messaging apps
  通讯应用
• Chat programs
  聊天程序
• Social media apps
  社交媒体应用
• Virtual emulators
  虚拟模拟器
• Multiplayer games
  多人游戏
• Collaboration tools
  协作工具
• API
  API
• And many more.
  还有很多。

大量的图书馆 (An enormous number of libraries)

In 2009 Node.js was born and the first form of npm(Node package manager was created) and due to the use of JavaScript language, it became immensely popular for Full Stack Web Developer. Within one year Express and socket.io came into existence and it became immensely popular into the online world.

在2009年，Node.js诞生并形成了npm的第一种形式(创建了节点包管理器)，由于使用了JavaScript语言，它在Full Stack Web Developer中变得非常流行。 不到一年的时间，Express和socket.io就诞生了，并在在线世界中大受欢迎。

在哪里学习？ (Where to learn?)

Whenever we start with a new technology or we have heard about something which we want to learn. So the first question that arises in our mind is where to learn? If you seem to be a new programmer and want to learn anything yeah I mean anything related to code you just have to dive into its documentation.

每当我们从新技术入手时，或者已经听说了我们想学习的东西。 因此，我们想到的第一个问题是在哪里学习？ 如果您似乎是一名新程序员，并且想学习任何内容，是的，我的意思是与代码相关的任何内容，您只需深入研究其文档即可。

No one teaches you better than its documentation. For instance, if we want to learn Node we scramble over the internet, at Youtube or even at medium. We even didn’t find great content that teaches us everything about Node and we just learn a bit of it. Remember “Half Knowledge is always dangerous”.

没有人比它的文档教给你更好的。 例如，如果我们想学习Node，我们就会在Internet上，Youtube甚至是中级网站上争夺。 我们甚至找不到很好的内容来教我们有关Node的所有知识，而我们只是学到了一点。 记住“半知识永远是危险的”。

You can also prefer Freecodecamp, w3schools, Youtube, udemy, and much more.

您还可以选择Freecodecamp，w3schools，Youtube，udemy等。

为什么只有节点？ (Why only Node?)

“The most exciting single piece of software in the current JavaScript universe”, Ryan Dahl, software engineer and inventor of Node.js.

“当前JavaScript领域中最激动人心的软件，” Node.js的软件工程师兼发明家Ryan Dahl。

According to Google trends, Nodejs is one of the crucial Javascript runtime environments and it is growing since its release worldwide according to developer interest.

根据Google的趋势，Nodejs是至关重要的Javascript运行时环境之一，并且根据开发人员的兴趣，自从其在全球范围内发布以来，它一直在增长。

According to PayScale, the average Node.js salary in the US ranges from $67k to $113k, with an average of $105k.

根据PayScale的数据，在美国，Node.js的平均薪资范围为$ 67k至$ 113k，平均为$ 105k。

I know money is not our priority it seems to be a passion to learn it, work on it, and then to earn from it. For me learning and implementing Node.js is an overwhelming response. And I am damn sure you will like it as well. Thanks for reading it.

我知道钱不是我们的首要任务，它似乎是一种学习，加工然后从中赚钱的热情。 对我来说，学习和实现Node.js是一个压倒性的响应。 而且我敢肯定您也会喜欢它。 感谢您阅读。

翻译自: https://medium.com/dev-genius/intro-to-nodejs-and-why-you-need-to-learn-it-b4b629741a4c

为什么要学习nodejs