IONIC Framework Interview Questions

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.

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IONIC Framework Interview Questions

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

Frontpage is the default activity name from AndriodManifest.xml

Ionic 4 comes with following outstanding Features that make cross-app development more easy and comfortable.

  • Web Components
  • Capacitor
  • Stencil (web component compiler)
  • ion-Backdrop (Full-screen components which overlay other components)
  • ion-Picker
  • ion-Ripple Effect
  • ion-Route
  • Color Changes
  • Lazy Loading
  • CSS Variables
  • Ionic Native 5

The current version of Ionic Framework is 4.0. It was released on Jan. 23, 2019. Ionic uses Angular 6 or above for development. 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.

Use Javascript, '_blank', 'location=no'); to open a download link while inside an ionic inAppBrowser

  • 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.
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.
There is a reason why Ionic2 framework is better than the Ionic1 framework. Here are some features which were included in the ionic2 framework when it was being developed.
  1. Ionic2 framework consists of classes unlike ionic1 which has controllers.
  2. In ionic2, every component has its own folder and its own class file.
  3. In ionic2, you can automatically generate pages, providers, tabs, pipes, components, and directives.
  4. In this, more native approach is used for navigation.
  5. Ionic2 is just plain old JavaScript.

Use the following command to update Cordova plugins.

npm install -g cordova-check-plugins
cordova-check-plugins --update=auto

To Rename Ionic app from HelloCordova to custom.

Open config.xml file from your project's root directory and update the value inside tags

  • Cordova: Cordova is a JavaScript framework that builds apps, which can access the device hardware. Cordova cannot build UI interactions of mobile apps because it uses HTML5, CSS6, Sencha to build UI. However, it complements other web technologies used to develop mobile apps. Cordova is also known as Apache Cordova.
  • PhoneGap: PhoneGap is a framework developed by Adobe Systems. It is used for developing mobile applications and can be used by anyone with the knowledge of CSS, HTML, JScript. PhoneGap is a propitiatory version of Apache Cordova and provides extra features apart from the existing Cordova.
  • IONIC: IONIC framework is used to build cross-platform mobile apps using web technologies like CSS, HTML. Released in 2013, it was built on top of Angular JS and Apache Cordova.