IONIC Framework Interview Questions

Ionic is mobile app development framework for web developers. It helps web developers to create the Hybrid mobile application. The ionic framework is complete open-source SDK for hybrid mobile app development.By using Ionic you can create a Mobile application on various platforms like Android, IOS, and windows using a single codebase.

Read Best IONIC Interview Questions and Answers

#1 How many types of storage available in Ionic framework?

The easy way to store key or values and JSON objects are known as storage in Ionic Framework. In this various storage, engines are used. While on the web application, the storage will tend to use IndexedDB, WebSQL, and local storage. Various types of storage are available in Ionic framework. Some of them are –
  • HTML5 local storage
  • Cookie and session storage
  • indexedDB
  • WebSQL
  • PouchDB
  • Webservice/api storage
  • Cordova storage.

#2 What is the difference between ionic polymerization and free-radical?

  • Ionic polymerization is a chain polymerization that has ions and ion pairs in the center.
  • The initiation of ionic polymerization consumes very less activation energy than radical polymerization.  
  • It is an alternative to free radical polymerization.
  • Free radical polymerizations are those polymerizations that are formed by adding free-radical building blocks.
  • Free radical polymerization uses initiators and coinitiators.
  • It is the only way to obtain different types of polymers and material composites.

#3 How to use observables in an Ionic framework?

Observables are something that are not specific to Ionic or Angular and are provided by the RxJS library. Observables are almost similar to the promises but can do a lot more. It can deal with multiple values at a time rather than just resolving one value. You can even subscribe to an observable to manipulate the data which is associated with it. Observables are considered to be “lazy”, i.e. they won’t get executed until and unless they are subscribed to. Various operations can be applied to the observables for modifying it and returning a new one. You can even create your own observable. The observable patterns are combined into one with the help of subject which is preferred for simple implementations.

#4 What is the current stable version of Ionic framework?

Ionic currently requires Angular JS in order to work as its full potential. The current stable version of the ionic framework is ionic 3.0. It was released on 24th February, 2017. It helps you build native-feeling mobile applications using web technologies. It mainly focuses on the look and feel, and the user interface of your application.

#5 What’s new in IONIC 3?

#6 What is Ionic Framework?

IONIC framework is an HTML5 platform that enables web developers to build hybrid mobile apps. Hybrid apps are those apps that have access to native perform layer and are small websites running in browser shell in the apps. It is a powerful HTML5 SDK that helps to build mobile apps using HTML , CSS, and JavaScript. Ionic framework mainly emphasizes on the look and feel of the app and its UI interaction. This means that we aren’t a replacement for PhoneGap or JavaScript framework. Ionic fits well with the front end part of your app. They are free to use under MIT license so it can be used for personal or commercial projects. Also Prepare: Frequently Asked Xamarin Interview Questions

#7 How to use non-native plugins on Ionic?

#8 How to open a download link while inside an ionic inAppBrowser?

#9 How to convert base64 image to blob image in ionic?

#10 How to disable content scrolling in IONIC?

#11 Ionic File and Folder Structure (v1 and v2)

#12 How many types of storage available in IONIC Framework?

#13 Ionic Framework developed by whom?

#14 How to get selected value from a select in Ionic?

#15 List some popular apps built with Ionic Framework?

Here goes a list of some popular applications built with the help of ionic framework: –
  • Pacifica: Cognitive Behavioural Therapy
  • TD Trading: Stock Trading App
  • Sworkit: Workout and Fitness Plan
  • MarketWatch: Stock Market and Business News
  • ChefSteps: Cooking Tutorials and Tool
  • Nationwide: Insurance and Financial Services
  • JustWatch: Streaming Search Engine
  • Untappd: Social Discovery and Check-in Network
  • National Museum of African American History and Culture
  • Cryptochange: Cryptocurrency Tracker
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