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Node js Developer Job Description Sept 2023

With this in place, we only have to import the modules we need for our programs. I/O operations have to do with sending requests to the computer and receiving responses. These operations include reading and writing files, making network requests, and so on. In the browser, we can use JavaScript to interact with the markup elements and tweak the style. The browser promptly runs the code, as it is a runtime environment.

What does a node JS developer do

But JavaScript is single-threaded (not really, but it has a single-threaded event loop, which we’ll discuss a bit later). So this would make JavaScript not very well suited for multi-threaded tasks. Consider a scenario where we request a backend database for the details of user1 and user2 and then print them on the screen/console. The response to this request takes time, but both of the user data requests can be carried out independently and at the same time.

An Example Node.js Application

The npm package manager was released in 2010, and native Windows support was added in 2012. This allows Node.js to handle thousands of concurrent connections with a single server without introducing the burden of managing thread concurrency, which could be a significant source of bugs. Finally, we looked at what the future could hold for Node.js, and we concluded it will likely only power even more applications. Deno is a JavaScript Runtime Environment based on Google Chrome’s V8 engine but written in Rust. Deno is not only a Runtime environment for JavaScript but also TypeScript.

What does a node JS developer do

All you need is to provide a detailed requirement of your developer, and we can match you with one in our team. Full Scale is one of the companies in Cebu City, Philippines that is tried and trusted by companies in the U.S. We have worked with dozens of clients from various industries and sizes over the years. Offshore hiring takes 50-75% less from its American counterparts. The Philippines is one of the most popular offshore hiring destinations.

What is the V8 Engine?

The CLI lets users interact with npm packages in the registry directly from their consoles. The registry is reportedly the largest single language code repository in the world. Of course Express is deliberately a very lightweight web application framework, so much of its benefit and potential comes from third party libraries and features. We’ll look at those in more detail in the following articles. In our next article we’re going to look at setting up a Node development environment, so that you can start seeing some Express code in action.

What does a node JS developer do

Back in 1995, JavaScript was created as a client-side scripting language. In building a website, you can use HTML in designing and CSS to make it more attractive. The NPM library is one of the excellent resources that comes with Node.js.The library contains a registry of over a million packages. This is good news for front-end developers who work with JavaScript. If you want to start working on the server side, it’s easier compared to learning a new back-end language from scratch.

What is a Node.js Developer?

The Event Loop in Node.js is a very important part of the process. The loop starts running as Node.js begins executing a program. Open source is generally used to describe software where the public can examine and edit its source code. This means anybody can inspect the code that makes the program work the way it does. In this article, we will dive into the world of Node.js, learning what it is, why it was created, and what it is used for. This isn’t a project-based tutorial – it aims to introduce beginners to Node and how it works.

The callback function takes a request and a response object as arguments. In our Hello World Express example (see above), we defined a (callback) route handler function for HTTP GET requests to the site root (‘/’). JavaScript code frequently uses asynchronous rather than synchronous APIs for operations that may take some time to complete. A synchronous API is one in which each operation must complete before the next operation can start. For example, the following log functions are synchronous, and will print the text to the console in order (First, Second).


This default error-handling middleware function is added at the end of the middleware function stack. If you pass an error to next() and you do not handle it in an error handler, it will be handled by the built-in error handler; the error will be written to the client with the stack trace. Node.js responds to those events by using an event loop to load event callbacks to the engine after something triggers an event.

  • The CLI is part of the npm package management system, which includes an extensive registry of JavaScript software and its meta information.
  • You can check out the changelog for information about changes in the current release, and GitHub for more detailed historical release notes.
  • These operations include reading and writing files, making network requests, and so on.
  • This is used for loading middleware functions at a particular path for all request methods.
  • The createServer() method of http creates a new HTTP server and returns it.
  • Also, it can be used to build web applications and software because of its lightweight and scalability.
  • They create most of the back-end components and bind applications with third-party web services.

If you are curious about learning how to build Node.js applications, I recommend the following resources. Node.js is built on top of the Chrome V8 JavaScript engine. This is significant because the V8 engine powers some of Google’s in-browser applications like Gmail.

With this invention, developers could build more dynamic web pages. Additionally, the developer will need advanced knowledge of Node.JS and compatible frameworks such as Express JS, Kua, or Meteor JS. This essentially lets you add features to JavaScript by embedding V8 into your C++ code so that your C++ code understands more than what the ECMAScript standard otherwise specifies. V8 can run standalone or can be embedded into any C++ application. It has hooks that allow you to write your own C++ code that you can make available to JavaScript. However, you must keep in mind that staffing comes with expensive fees and other hidden costs.

With Node.js, you can choose which version to run your server-side application on. As a result, you can use modern JavaScript features without worrying about any version-specific inconsistencies. Node.js exposes almost all the system resources to your programs. This means you can interact with the operating system, access the file systems, and read and write to the files. But, you do not have access to operating systems and file systems from the browser.

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