With the boosting popularity of JavaScript, the world has seen a revolutionary change in web development. The process and techniques of web designing have taken a dramatic turn. JavaScript running on the server and in the browser has opened new possibilities and helped us discover ways we weren’t aware of.
Node.js is an open source, cross-platform runtime environment for developing server-side and networking applications written in JavaScript. It is the archetype of an exceedingly customizable and scalable tech. JS is designed to use single-threaded, event-based architecture and non-blocking based I/O models. It is made of Google Chrome’s V8 engine written in multiple-platform C library i.e C++ and Libuv that backs asynchronous I/O based events on event loops and thread loops. Although Node.js is made of Libuv, it can still be used in pure JavaScript.
Node.js can be used at a variety of platforms. Some examples are stated below:
Node.js is used by professionals and some extremely renowned companies like Netflix and Uber. Evidently, it possesses features that make it the best. Below mentioned are some advantages of using Node.js
Node.js has two types of API functions
The order in which the execution of statements is done by the computer is called Control Flow. The control flow function in Node.js is a code that is applied between Asynchronous function calls. Below given are steps which are used to implement Control Flow Function.
The reason behind Node.js rapidly gaining popularity is its loop-based server for JavaScript. Node.js provides the developer the facility to write JavaScript on the server.
The I/O non-blocking operation of Node.js is made possible through event loops despite JavaScript is a single-threaded language. At the beginning of the process, Node.js initialises the event loop, processes the provided input script that syncs API calls, schedule timers, then starts processing the event loops.
Debugging means relieving your code from any error. Identifying an error can take up many hours for which Node.js has a great tool that can help finding the error.
Open the initial file (typically index.js), activate the Run and Debug pane, and click the Run and Debug Node.js (F5) button. The debugging screen is similar to Chrome DevTools with a Variables, Watch, Call stack, Loaded scripts, and Breakpoints list.
Every developer must be equipped with the latest information and updates on software libraries as they make the task of programming very easy. The most popular and useful modules of Node.js are-
Callback function is employed when a task is complete. Hence it is a precaution against any kind of blocking. In the meantime, the callback function allows other codes to run. With the Callback function, Node.js becomes immensely scalable as it can process a large amount of requests without waiting for any function to return the results.
Even though Node.js is one of the most popular and widely used open sources software, it has its own challenges-
REPL stands for Read-Eval-Print-Loop. This is a virtual environment that comes with Node.js. It is a quick and easy way to test simple Node.js codes.
A test pyramid is a metaphor that is used to make a bunch of software tests of different granularity. For example, unit testing, component testing, integration testing, system testing, end-to-end testing, UI testing.
Middleware is a function that has the access to the requested object, requested response and the next function in the application’s request-response cycle. The middleware function can perform multiple tasks such as; execute code, make changes to the request and the response objects, end the request-response cycle and call the next middleware in the stack.
Exit codes in Node.js are particular codes which help in finishing the processes. This may also include global objects. Some examples of exit code in Node.js are-
The major difference between Nodes.js and Ajax is –
Nodes.js is a server-side platform for developing client-server applications, whereas Ajax is a client-side scripting technique that was basically designed to show the contents of a page without refreshing it.
Node.js is equipped with various security mechanism, some are mentioned below:
Node.js uses several flags in the read/write operations in files. Below mentioned are some of the flags:
Spawn command is designed to run system commands. When Spawn command is used, you send it a system command that is processed on its own but no further code is processed within your node process. Whereas, Fork is a special instance of Spawn. This means that you can create workers for running the exact same Node code base or maybe a different module for a particular task.
Node.js is created with a feature of conducting custom events by using event modules. These event modules include an EventEmitter class that is used to raise and operate custom events. Some important methods of EventEmitter class are:
Node.js is JavaScript-based. JavaScript is one of the most popular and simplest coding languages in the IT world. It is easy to learn for beginning developers. Even people without the knowledge of JavaScript but with some basic technical background can read and understand the code.
More than that, the pool of JavaScript talents is large, so as a business owner, you have full freedom to choose the team to work with.
Get expert Node developers on a full-time or hourly basis (dedicated monthly) to create feature-rich, dynamic, and secure web apps in 4 simple step. Our remote NodeJS developers have experience building complex enterprise-grade Node.js web apps for small to large scale companies.
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