vue js interview questions and Answers
Whether you are a multiyear experienced VUE JS developer or a fresher with the wish to reach new milestones of success in this niche, going through this expert advice content consisting vital VUE JS interview questions with answers, and other practice-oriented details can be extremely helpful. VUE JS is an open source and progressive JavaScript framework for building advanced user interfaces. It is designed to be incrementally adoptable. The core library of VUE JS is based on the view layer only and easy to integrate with existing projects and other libraries.
Most Frequently Asked vue js interview questions
| S.no | V-if | V-show |
|---|---|---|
| 1. | It is used for UI element rendering. | V-show is used to manage the display of a UI element. |
| 2. | V-if has else part | Doesn’t support “no else” part. |
| 3. | Only renders the elements that fulfill the condition. | It renders all elements and optimally manages with CSS “display” attribute. |
In VUE JS, Mounted refers to a VUE instance which is mounted to a DOM element, and that element is accessible as $el property on the VUE instance. It is called every time your component is loaded to the el.
There are certain cases in VUE JS, where JavaScript’s full programming power will be needed to build HTML. The render function is implemented here as an alternative of templates to successfully create dynamic components. Components with render functions will not have a template property or tag.
Compare to Angular and React, VUE JS is very small in size, thus highly improving its load time. In VUE, behavior and UI are both part of components, which makes properties intuitive. It is highly customizable also, allowing users to combine the component’s behavior and UI from within a script. VUE JS is easier to learn also, placing it top in simplicity and flexibility. The number of contributors is here also exceptionally growing in just a few years.
We can use the v-on directive to handle events in VUS JS. It helps in adding interactivity to web apps by responding to developer’s input.
Development History
Developed by former Google employee Evan You, VUE JS was initially released in February 2014. With continuous improvement and feature addition over the year, VUE JS is currently operating its version 2.6 released in Feb 2019 with the title of Macross.
Let’s further continue to discuss a set of most interviewer-preferred VUE JS interview questions with answers for your acknowledgment and practice. For your confirmation, these questions are handpicked by niche experts and accompanied here with their best-suggested answers.
Advantages:
- Extremely small in size (18–21KB), so easy to download and use it instantaneously. It’s small in size that doesn’t mean you have to compromise with speed. In fact, it beats most of the bulky frameworks such as Angular, Reacts and Ember.
- User-friendly, easy to understand, and develop apps.
- It facilitates developers to integrate with the existing applications built on JavaScript. This is possible because of the availability of components in VUE JS for everything.
- VUE JS offer comprehensive documentation, which is even easily understandable to users with very little knowledge of HTML and JavaScript.
- Because of MVVM architecture, VUE JS facilitates two-way communications, which makes HTML block handling easier.
- Users can write their own template in JavaScript and HTML file using virtual nodes.