Node.js and Express.js: Express.js is a small Node.js framework of web application. It provide a potency set of topographies for both mobile and web applications. Node.js foundation has offered an open source framework with Express.js.
What is Node.js?
Node.js is an open source and cross-platform runtime environment for executing JavaScript applications external to the browser. When you want to create server-side programs or network web application used to the Node.js. When the JavaScript inscribed to the elementary modules of Node.js. In a real-time it’s mostly used for server applications.
When a machine or server execute the JavaScript on locally that allow the Node.js. Previously, it have browser-based language or remained client-side language so the first Node was introduced the execution of JavaScript are not imaginable on the system. It was only useful for creation and control of DOM elements.
Node.js offer a many frameworks to use e.g. hapi, koa etc. One of such framework is Express.js. It is more popular and useful than other frame work of Node.js.
Features of Node.js
Scalability
Node.js is extremely scalable because that server responds in non-blocking way.
Community
When the open source tribe supports the Node.js. This is the only reason to over the time that many marvelous modules have been added to Node.js applications.
Event driven input and output
Non-blocking of APIs to the Node.js. It means API are not return to the data of server are not waiting. Instead moved to another APIof server.
Zero Buffering
Node.js are no time buffer the data of applications. They only the statistics in large pieces.
Single threaded
Node.js follows a single threaded model with event looping.
What is Express.js?
Express.js is a small Node.js framework of web application. It provide a potency set of topographies for both mobile and web applications. Node.js foundation has offered an open source framework with Express.js. When the applications created by trifling interface in which delivered by Express.js. It provided you the implements that are compulsory to build an app. When the Express.js are directly persevered, because it’s elastic in a way that there are many components accessible on package manager.
Most commonly one drawback of JavaScript has found, because it supports client-side scripting, but working on server side at any website were conventionally written in some other programming language. Execution of JavaScript on the server side is permitted, because Node.js provided server-side run-time setting with JavaScript. This is an invaluable competence. More suitable to make the responsibilities of developers, numerous JavaScript contexts to melodramatically cut codes in addition to decreasing coding times have been created. Express.js is one such framework.
Features of Express.js
Page state retention
Allow the Express.js, preserving page state using routing through their URLs. With different user you can share this URL, even if you make changes, when you shared it these URLs will take the user to the same page site.
Dynamic content
Using the HTML templates, Express.js of templating engine provide the provision of dynamic content on the web page. When the hardware specifications of the client side deals with so much of pressure.
Server-Side programing
Express.js uses many Node.js features to call functions anywhere. Node.js can be written I less number of lines and in a few minutes, because many multifaceted tasks that take numerous lines of code and hours of programming.
Error-fixing
Errors and bugs in any application can cause whole application can be breakdown. The identification of task is very crucial. Express.js provide an easy mechanism, which are the application is causing bugs are let you quickly located.
Express.js Vs Node.js
| Feature | Express.js | Node.js |
| Common usage | It is used to build web-apps using approaches and principles of Node.js. | It is used to build server-side, input-output, event driven app. |
| Level of features | It has more features than Node.js because it adds functions to Node.js’s already existing functions | It has fewer features than Express.js |
| Written in | JavaScript | C, C++, JavaScript |
| Building block | It is built on Node.js | It is built on Google’s V8 engine |
| View Model | Supports view model | Doesn’t support it |
| Routing | Is provided | Is not provided |
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