Vue Js Online Test

1. What is the main benefit of using SSR in a Vue.js application?

Improved SEO Faster client-side rendering Simplified component management Enhanced animation capabilities

2. How can you create a reusable Vue component that can be used across multiple Vue applications?

Export the component as a JavaScript module Use the globalComponent() method Use the Vue.component() method Use the registerComponent() method

3. Which directive is commonly used for handling user input events like input or click?

v-bind v-event v-model v-bind:event

4. Which tool provides a guided setup for creating and managing Vue.js projects?

Vue Inspector Vue CLI Vue Wizard Vue Manager

5. What is the primary function of the Vue.js ecosystem tool known as "Vue Devtools"?

Internationalization (i18n) State management for Vuex Debugging and inspecting Vue components Server-side rendering (SSR)

6. What is the purpose of the describe function in testing with Jest or Mocha?

To define a test suite To define a test case To run the tests To mock dependencies

7. How can you bind a CSS class to an element conditionally in Vue templates?

Using the v-style directive Using the v-bind:class directive Using the v-show directive Using the v-html directive

8. How do you specify different transitions for entering and leaving elements in Vue?

By using separate <transition> components By defining custom CSS classes for each transition By using the v-transition directive By setting a Vue transitionType option

9. In Vue, when are computed properties recalculated?

Whenever a method is called Whenever a data property changes When the component is created When explicitly triggered

10. What is lazy loading in the context of Vue Router?

Loading routes only when they are needed Delaying route transitions Loading data asynchronously Loading global components dynamically

11. How do you use a custom directive in a Vue template?

By wrapping the directive in curly braces By using the v- prefix followed by the directive name By using the @ symbol followed by the directive name By defining a computed property that applies the directive

12. What is the purpose of the v-on directive in a Vue template?

Listens to DOM events and triggers methods Adds styles to elements Defines data properties Configures Vue instance settings

13. Which CSS class is applied to an element when it leaves the DOM with a Vue transition?

.v-exit .v-leave .v-leave-active .v-enter-active

14. What is the purpose of the update hook in a Vue custom directive?

To update the element's value when its binding value changes To format data in templates To manage routing To create Vue components

15. Which directive is commonly used for rendering translated text in Vue templates?

v-model v-bind v-if v-t

16. In Vuex, what is a store?

A component that manages state A global state management container A computed property A route definition

17. How can you handle errors when making an HTTP request with Vue Resource?

Using the .catch() method Using the .then() method Using the .error() method Using the .finally() method

18. In Vue, what is the syntax for using a custom directive in a template expression?

{{ expression | customDirective(arg) }} {{ expression.customDirective(arg) }} {{ customDirective(expression, arg) }}

19. What is Vue Server-Side Rendering (SSR) primarily used for?

To render Vue components on the client-side To render Vue components on the server-side To create custom directives and filters To manage Vue Router

20. What is the purpose of the "public" directory in a Vue.js project created with Vue CLI?

To store static assets like images and CSS To contain the main Vue component To manage API requests To store configuration files