Foundation of Vue Js

Question 1

Describe Vue.js.

Accepted Answer

It is an open-source front-end JavaScript framework for developing user interfaces.

Answer

Vue.js is a progressive, open-source JavaScript framework specifically designed for building user interfaces and single-page applications. It focuses on the view layer, making it easy to integrate into existing projects or use for complex front-end development. Its reactivity system and component-based architecture are key features.

Question 2

What is the purpose of Vue.js?

Accepted Answer

The creation of user interfaces usually makes use of this dynamic JavaScript framework.

Answer

Vue.js is primarily used for building interactive and dynamic user interfaces (UIs) and single-page applications (SPAs). It provides a reactive data-binding system and a component-based architecture that simplifies the development of complex front-end applications, allowing developers to efficiently manage the view layer of their web applications.

Question 3

All of the event listeners are automatically deleted after a view model is lost.

Accepted Answer

True

Answer

In Vue.js, when a component (or view model) is destroyed or unmounted, Vue's reactivity system automatically cleans up its associated event listeners and watchers. This prevents memory leaks and ensures that the application remains efficient by removing references to elements that no longer exist in the DOM.

Question 4

How are vue resources installed?

Accepted Answer

$ yarn add vue-resource

Answer

The correct command to install the `vue-resource` package using Yarn, a popular package manager for JavaScript, is `$ yarn add vue-resource`. The `$` symbol typically denotes a command to be run in the terminal, and `yarn add` is the command for adding a new dependency to a project.

Question 5

How are vue plugins installed?

Accepted Answer

MyPlugin.install = function (Vue, options) {}.

Answer

Vue.js plugins are typically exposed as an object with an `install` method. This `install` method receives the `Vue` constructor as its first argument, along with an optional `options` object. This standard structure allows plugins to extend Vue's functionality, such as adding global methods, directives, or components.

Vue JS Practice Test

Vue JS Practice Test

Foundation of Vue Js