One of the numerous free and open-source front end JavaScript frameworks for developing single-page apps and user interfaces, Vue.js is also known as Vue and is frequently referred to as Vue. This framework was developed by Evan You, and he and the other core team members are now responsible for keeping it up to date.
Numerous companies have begun aggressively recruiting for Vue.js positions in light of the technology’s popularity. As a result, if you have been preparing for a job interview in this field, this post will walk you through some of the greatest and most recent Vue.js interview questions.
What Is Vue.js?
Vue is a progressive framework for creating user interfaces that were intended to be adopted gradually. To make it simple to combine with other projects or libraries, its main library only concentrates on the view layer: https://devoxsoftware.com/hire/hire-vue-js-developer/.
But in contrast, to React, Vue offers additional libraries for routing and state management that are all officially supported and maintained up to date with the core framework.
Why Is Vue.js Rumored to Be Angular’s Competition Soon?
User interfaces and single-page apps similar to Angular are also built with vue.js. It is changing quickly these days, and new libraries and extensions are always emerging.
Vue.js is widely used by the developer community, and its recognition as a popular JavaScript language is growing daily. Because of this, it is thought to be Angular’s prospective rival.
Is a Property with Reactive Dependencies Computed by Vue.js Each Time the Computation Is Called?
Users of Vue.js are advised to refrain from enclosing too much reactive data-related functionality in their templates. Users can instead create and save calculated characteristics inside the objects whose data is used in the computations. Saving such calculations promotes simpler code that is easier to understand and reuse.
The findings are cached depending on the reactive dependencies involved, which is one of the key features. In other words, rather than running every time it is called, the calculation only runs when any of the dependents change. Such characteristics provide calculated properties a competitive edge over approaches in the same situation. After all, invoking the particular method would imply that the calculation is performed each time.
Explain the Vue Instance Live Cycle
Each Vue instance’s life cycle runs through some initialization processes when it is created.
For instance, it must configure data observation, construct the template, and produce the required data bindings. Along the process, it will also activate a few lifecycle hooks, giving us the chance to run our logic.
More hooks are called at various times throughout the instance’s lifespan, including compiled, ready, and destroyed. All lifecycle hooks are invoked using the Vue instance that is called them in this context. There are no controllers in Vue.js, which may have left some users asking where the idea of “controllers” exists there. The component’s custom functionality would be distributed across various lifecycle hooks.
What Are the Components of a Vue.js App’s Data Flow?
A one-way data flow is what Vue.js employs. Data is sent to child components from a specific parent component via a prop or a custom attribute, which becomes a property on the child component instance.
An automated update occurs in the child component whenever the parent component modifies a prop value. In a child component, changing property is not recommended. The parent component is unaffected as well.
Through an event, the kid component can converse with the parent. Any event released by the child component instance can have a handler assigned by the parent, and data can be returned to the parent. To update the props supplied to it, the child component can broadcast a specific event.
The Prop Component Is Precisely What?
Component Prop is the mechanism through which data is transmitted from the parent component to the child component. Any number of props is allowed for a component. When a value is provided, a custom attribute called the prop transforms into a property on the component instance.
As soon as React identifies a component as a user-defined module, it directs the element’s JSX stuffs and kids as a solitary article. This article is recognised as “props.”
Using a component Prop, a one-way down binding is created from a parent component to a child component.
Conclusion
It certainly helps you prepare and perform well to know what to expect during the interview. Use this extensive list of Vue.js interview questions for both beginners and experts as a resource when putting up your application. Finally, maintain your composure and professionally present your information.