JavaScript Frameworks interview questions

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  • 18th Apr, 2021

JavaScript Frameworks interview questions

1. Javascript

JavaScript is a lightweight, interpreted programming language used by developers across the world to design network-centric applications. It runs complementary to Java programing language. JavaScript was initially used only on the client-side browser, but with the advent of NODE.JS javascript is also freely used on the server-side. It is said, JavaScript can bring web pages alive and hence have attracted innovative web developers. Java Script has now become very important as its application is extended in mobile app development, desktop app development and also to game development. JavaScript comes installed with almost every popular web browsers like Chrome, Safari, Mozilla Firefox and many more.

2. Javascript Closure

3. Node Js With Express

To run JavaScript outside any browser, Node.JS can be a developer's first choice. Node. JS is an open-source, cross-platform where developers use the command-line for server-side scripting. Node JS supports high-speed development of web servers in JavaScript. By supporting event-driven programming web servers become scalable without using any thread. With Node.JS developers can connect scripting languages like JavaScript with the power of Unix network programming. Node JS is has a large number of open-source libraries that are hosted on the npm website. With the rising popularity of Node.JS, many modern desktop IDEs come up with editing and debugging features for Node.js applications

4. Angularjs

5. Ajax

Asynchronous JavaScript + XML (AJAX) uses many web technologies on the client-side to build exclusive asynchronous web applications. It is a set of web development that was developed in 1999, written in JavaScript. With Ajax, developers can develop web applications that are capable of sending and retrieving data from a server asynchronously without interfering with the display and behavior of the existing page. Ajax is not a programming language, but a collection of made of several technologies

6. Aurelia

7. Backbone Js

8. D3.js

Developers who are interested in designing dynamic and interactive data visualizations in various web browsers choose Data-Driven Documents (D3). Vector Graphics, HTML5, and Cascading Style Sheets standards are widely used here. Like Protovis D3 uses static visualizations. But D3 is more interactive, transitive and has more transformations.

9. Ecmascript 2017

10. Emberjs

EmberJS is a client-side framework used by millions of developers for building web applications. It is written in JavaScript and is open-source software. EmberJS provides a complete solution for web application development that contains data management and application flow. EmberJS is based on the MVC framework and was developed by Yehuda Katz. It was first released in December 2011.

11. Es6

12. Ext Js

Ext JS or Extended JavaScript used for the development of applications especially for desktop with modern User Interface with cross-browser functionality. Extended JS is based on MVC architecture.

13. Grunt Js

Grunt JS is a JavaScript task runner by Ben Alman. It is written in Node.JS and distributed by npm. It provides a command-line interface to run custom tasks in Gruntfiles. The main functions of Grunt JS are minification, compilation, unit-testing, linting. Grunt is nowadays a rapidly growing ecosystem. With the support of hundreds of plugins, Grunt automatizes almost every repetitive task and to reduces the efforts of the users. Moreover, Grunt also allows the use of customized plugins.

14. Gulp Js

Gulp JS is a JavaScript toolkit that is used by young developers for the front-end development for the streaming build system. Gulp is a task runner for automating repetitive tasks in web development for the following main functions are minification, concatenation, cache busting, unit-testing, linting, and optimization. Gulp JS is a cross-platform software developed by Eric Schoffstall and is written in JavaScript.

15. Handlebars Js

Handlebars.js is a popular templating engine based on the Mustache template language, created by Chris Wanstrath. But, unlike Mustache, Handlebars does not perform a recursive lookup by default. It is powerful and simple to use. It is used to build semantic templates very easily. Handlebars.JS is supported by a large community across the world. Handlebars help developers to separate the generation of HTML from the rest of the JavaScript and thus makes codes clean. It helps developers to build applications from both client-side and the server-side and is written in Node JS. As Handlebars compiles the semantic templates into JavaScript functions, it makes its execution much faster.

16. Jquery

JQuery is a JavaScript library that is used for simplifying interactions between Document Object Model (DOM) and JavaScript.

17. Json

JSON (JavaScript Object Notation) is a light-weight format used for data interchange using human-readable text as objects. It is also easy for machines to parsing and generation. The objects consist of two main parts Attributes-value pairs and Array data types. JSON is a language-independent data format and forms one of the very common data formats and is derived from JavaScript. One of the many applications of JSON includes the replacement of XML in the AJAX systems.

18. Knockout Js

Knockout JS is a JavaScript standalone built on MVC architecture. It was developed as an open-source project by Steve Sanderson.

19. Koa Js

20. Less.js

Leaner Style Sheets (LESS) is a style sheet language for the client and server-side. It can be compiled to Cascading Style Sheets (CSS). The first version of this a dynamic preprocessor was written in Ruby by Alexis Sellier and is now replaced by JavaScript. LESS is a nested metalanguage with the intended syntax.

21. Marionette Js

Marionette JS is a minimalist JavaScript model which is made of a highly powerful set of patterns and components based on the Backbone JS. It is used by young developers to develop elegant apps.

22. Phantomjs

PhantomJs is used by developers who aim at building automation in web page interaction. PhantomJS is a discontinued headless browser that provides its users with JavaScript API which enables automatic navigation, user behavior, assertion making and screenshots for browser-based test systems. PhantomJS is based on WebKit and hence has a striking similarity with Safari and Google Chrome. This open-source software is written in the C++ programming language and was developed for programmatic control of the web pages. PhantomJS was first released on 23rd January 2011 by Ariya Hidayat and various tools developed on PhantomJs are CasperJS and YSlow.

23. Polymerjs

PolymerJS is an open-source JavaScript library that uses elements of HTML for building applications. It was developed by Google. The Polymer provides its user command-line interface for managing simple as well as complicated components of web applications in various projects.

24. React Js

25. React Native

React Native is a mobile application framework through which developers can develop apps for Android, iOS, Web, and UWP. It allows developers to combined ReactJS with other native platforms to develop apps for different platforms. It is developed by Facebook and is written in JavaScript and is very fast. React Native works in a way similar to ReactJS but does not manipulate DOM by Virtual DOM.

26. Riot Js

27. Sails.js

28. Typescript

TypeScript is a programming language for client-side that forms the strict syntactical superset of JavaScript. This open-source language is developed and maintained by Microsoft, and being the superset of JavaScript, gives greater liberty of writing the program to the developers. It is an object-oriented program that is statically typed in C# or Java and has wide-spread use of classes and interfaces. It was developed by Anders Hejlsberg and adds additional features to JavaScript.

29. Typo3

30. Underscore.js

One of the popular JavaScript library which provides various utility functions to multiple programming tasks is Underscore.JS with the recent stable release in 2018. without extending any built-in objects. The basic functional helpers of Underscore.js are map, filter, invoke. The features of UnderscoreJS is comparable with Prototype.js and Ruby language. Underscore.js was first developed in 2009 by Jeremy Ashkenas. The large number of functions in Underscore.js are widely divided into 4 categories functions for manipulating arrays, functions for manipulating objects, functions for manipulating both arrays and objects, functions for manipulating other functions. The utility categories include Utility, Chaining. At present, Underscore.js is taken over by Lodash.

31. Vue.js

Vue.js is a JavaScript framework used by creative developers to build single-page applications and attractive user interface. This open-source software is developed on MVC architecture and was created by Evan You. This open-source software is under the MIT license.

32. Meteor.js

MeteorJS is mainly used to provide backend development. Using JavaScript in the back end to save time, effort and build expertise is one of the main ideas behind Meteor. MeteorJS is an ultra-simple environment for building modern applications, moreover, it allows you to build for any device, web, IOS, and Android while utilizing technologies you have familiarity with. Keeping up with MeteorJS is not easy, and that’s why we have created a dedicated page for it. Here, you can find every information about it, including books, projects, and even conferences. MeteorJS is a JavaScript framework for creating powerful web application that runs on cross-platform and integrates well with other libraries.

33. Redux

34. Javascript Tricky

35. Dojo