IONIC Framework Interview Questions

IONIC Framework Interview Questions | Freshers & Experienced

  • Brian
  • 02nd Dec, 2019
  • 908 Followers

IONIC Framework Interview Questions

Q1. What is Ionic?

Ionic framework is an open-source software development kit for developing highly performant mobile and desktop apps. Web technologies such as HTML, CSS, and JS are used to enhance the front-end user experience.

Ionic framework is focused on a UI interaction of an app that includes controls, interactions, gestures, and animations. Along with that, it can easily integrate with other frameworks or libraries such as Angular and React just by including a simple script.

Q2. What's new in IONIC 4?

The new features added in Ionic 4 are:

  • Web Components: One of the greatest features in Ionic 4 is that every single component starts with a web component.
  • Stencil: The Stencil is a web component compiler that utilizes additional APIs like TypeScript, Virtual DOM, JSX and async for PWA.
  • ion-Backdrop: Ion-Backdrops are the full-screen components that are used to dismiss the other component. These components do this by superimposing other components.
  • Ion-Picker: The function of this property is to display a row of buttons and columns on the top of the application and also at the bottom-most part of the viewport. ion-Ripple Effect: This effect adds material design ripple interaction effect. It is very efficient and can be used without adding extra DOM to the elements.
  • Color Changes: There is some new default color has been added.
  • ion-select Popover: It is used for overflow actions that don't fit properly in the navigation bar and it appear on the top of the current page.
  • CSS variable: These features make some vulnerable changes in the variable and change the entire look of the app without even using the build tool.

Q3. Enlist the requirements of installing Ionic?

The main purpose of Ionic is to build apps for Android as well as iPhone. For that, you need to install the following software and setup on your computers. After that, you will be able to build a hybrid build app with the use of the Ionic Framework. The minimum requirements of Ionic are:

  • Node Package Manager (npm)
  • Git Bash
  • Ionic CLI & Apache Cordova
  • IDE - Visual Studio Code
  • Android SDK

Q4. List major advantages of using Ionic?

Major advantages of using Ionic

  • Easy to adopt: It is very easy to use an Ionic framework if you are familiar with the CSS, HTML, JavaScript. If the companies need hybrid application development then they can easily switch to Ionic.
  • Cross-platform app development: The ionic framework supports a lot of mobile versions like Android 4.1 and up, iOS 7 and up. Moreover, it supports the UWP to develop windows apps. A lot of users use Ionic to build applications quickly.
  • User Interface: Themes and components of Ionic are highly customizable. Besides, the ionic platform also enables the components to adapt to the platform on which the application is running.
  • Built on AngularJS: As Ionic is built on AngularJS which is a very fascination framework, it enables Ionic to give a strong structure that makes the code more manageable. It allows the development of hybrid applications more efficiently.
  • Cordova Plugins: As the Ionic utilizes the Cordova plugin, users can now access different components. Designers can now access features like Camera, GPS, Flashlight and others. Developers utilize these modules to make their application more fascinating.

Q5. Ionic Framework developed by whom?

Ionic framework is developed by Max Lynch, Ben Sperry, and Adam Bradley of Drifty Co. in 2013.

Q6. Enlist some popular apps built with Ionic Framework?

The following apps are built with the use of an Iconic framework:

  • MarketWatch
  • Pacifica
  • Sworkit
  • JustWatch
  • Joule: Sous Vide by ChefSteps
  • McDonald's Türkiye
  • ChefSteps
  • Untappd

Q7. How many types of storage is available in IONIC?

The easy and effective way to store key or value and JSON object are called storage in Ionic framework. There are several types of storage in the Ionic framework that are listed below: -

  • HTML5 local storage
  • Cookie and session storage
  • IndexedDB
  • WebSQL
  • PouchDB
  • Web service/API storage
  • Cordova storage.

Q8. How to get the installed version of the Ionic framework?

It is very easy to get the installed version of the Ionic framework. You can do it just by running the ionic version in the console of your web browser.

Q9. How to use observables in an Ionic framework?

Q10. How to parsing of JSON is done in Ionic?

Q11. What is maxLength of ion-input?

Q12. What is a Web View in Ionic?

Ionic use web technologies to build the apps and are rendered with the help of Web Views which are a full screen and full-powered web browser. Web apps are powered by the Web View in native devices. The plugin is provided a default for those apps that are integrated with Cordova in Ionic CLI which is managed by the Ionic.

Q13. What is the difference between PhoneGap, Cordova, and Ionic?

Difference between PhoneGap, Cordova, and Ionic

PhoneGap, a distribution of Apache Cordova, allows you to use web technologies such as CSS3, HTML5, and JavaScript for the development of cross-platform applications. In short, it is a web platform that presents native mobile device apps and data to JavaScript.

Apache Cordova is an open-source mobile development framework that enables developers to build cross-platform mobile apps. You can also use web technologies like HTML5, JavaScript, and CSS to develop a Cordova app.

Ionic is an open-source front-end framework for building cross-platform apps with the use of web technologies such as Angular and React. For developing highly interactive apps, Ionic provides a library of mobile and desktop-optimized CSS, HTML and JS components.

Q14. How do you pass data from one view to another in Ionic?

Ionic works with AngularJS and UI-router. In other words, you can use either Angular services or UI-router’s state resolve to pass data from one view to another.

As UI-router gives a resolve configuration. For instance:

$stateProvider
    .state('todos', {
        url: '/todos',
        controller: 'TodosCtrl',
        templateUrl: 'todos.html',
        resolve: {
            todos: function(TodosService) {
                return TodosService.getTodos()
            }
        }
    })

Q15. How can you test an Ionic applications?

As you know, ionic apps are built with the help of AngularJS. Angular is a good source of test libraries and frameworks like Jasmine and Karma test runner. Users can utilize these frameworks to write unit tests for Ionic applications. For the analysis in the browser, Ionic -CLI gives a live reload feature. Therefore, we can use browsers like Mozilla Firefox or Chrome Developer Tools with Firebug to debug and examine Ionic applications.

Q16. What are capacitor in Ionic?

A capacitor is a cross-platform app that facilitates the task to build web apps that run natively on iOS, Android, Electron, and the web. Capacitor offers a stable, web-focused set of APIs that enable an app to remain close to web standards.

About Author :

  • Author of IONIC Framework Interview Questions

    Brain Lues

    Brain Lues is Web designer and digital graphics Expert from Sydney, Australia. He has a master degree in computer science.He offer full commitment in his work , and be a pleasant and friendly team member.

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