Splendid Vue Test - 60+ MCQs: Vue.js test: Evaluate Your Vue.js Knowledge with Vue Questions and Answers

1. Which Vue.js directive is used for binding an attribute to an expression?

v-attr

v-bind

v-expression

v-attribute

2. What is the purpose of the 'watch' option in a Vue.js component?

To watch for changes in data or computed properties

To define methods

To handle user input

To perform asynchronous operations

3. What is the core library of Vue.js for building user interfaces?

Vue Core

Vue.js UI

VueDOM

Vue Router

4. How can you conditionally apply a CSS class in Vue.js?

Using the v-style directive

Using the v-class directive

Using the v-if directive

Using the v-condition directive

5. Which Vue.js component lifecycle hook is called before a component is created?

created

beforeCreate

beforeMount

mounted

6. Which Vue.js lifecycle hook is called when a component is destroyed?

created

mounted

updated

destroyed

7. Explain the concept of Vuex Modules in Vue.js. Provide a use case where organizing state with modules is advantageous.

Vuex Modules allow you to organize state, mutations, actions, and getters into separate files. A use case is when you have a large-scale application with multiple features, and you want to keep the codebase maintainable by organizing the state management.

Vuex Modules are exclusive to routing in Vue.js. A use case is when you want to manage state specifically for different routes in your application.

Vuex Modules are used for styling in Vue.js. A use case is when you want to organize styles into separate modules for better maintainability.

Vuex Modules are primarily for handling server requests. A use case is when you want to organize state specifically for making asynchronous API calls.

8. In Vue.js, what is the purpose of the 'v-model' directive?

Conditional rendering

Two-way data binding

Looping over an array

Event handling

9. What is the Vue.js directive used for one-way data binding?

v-one-way

v-data-binding

v-model

v-bind

10. Explain the purpose of the 'async' attribute in Vue.js Dynamic Components. Provide an example scenario where using the 'async' attribute is beneficial.

The 'async' attribute in Vue.js Dynamic Components is used to load components asynchronously. An example scenario is when you have large components that should be loaded lazily to improve initial page load performance.

The 'async' attribute is exclusively for handling user input in Vue.js. An example scenario is when you want to asynchronously handle user interactions within a dynamic component.

The 'async' attribute in Vue.js Dynamic Components is used for server-side rendering. An example scenario is when you want to asynchronously load components during the server-side rendering process.

The 'async' attribute is primarily for handling AJAX requests in Vue.js. An example scenario is when you want to asynchronously fetch data for a dynamic component from the server.

11. Which Vue.js directive is used for conditional rendering?

v-model

v-if

v-for

v-bind

12. In Vue.js, how can you handle user input using v-on?

By creating a custom method

By using the v-input directive

By binding a data property

By using the v-model directive

13. In Vue.js, what is the key benefit of using computed properties?

They are reactive and update automatically

They improve component styling

They simplify event handling

They enable dynamic component loading

14. In Vue.js, what is the purpose of the 'computed' property?

To define methods

To handle user input

To perform asynchronous operations

To compute derived data based on reactive dependencies

15. What is the purpose of the 'transition' component in Vue.js?

To create a conditional statement

To animate elements during transitions

To loop over an array or object

To define a custom directive

16. What is the purpose of the 'v-once' directive in Vue.js?

Enable one-time data binding

Enable one-time rendering

Enable one-time event handling

Enable one-time template compilation

17. Which lifecycle hook is called after the component is inserted into the DOM?

created

mounted

updated

destroyed

18. What is the purpose of the 'v-bind' directive in Vue.js?

Conditionally binding class

One-way data binding

Two-way data binding

Rendering a list

19. In Vue.js, what does the 'el' option in the Vue instance represent?

Element

Event Listener

Endpoint

Element List

20. What is the purpose of the 'scoped' attribute in Vue.js style tags?

To create a conditional statement

To scope styles to the current component

To loop over an array or object

To define a custom directive

21. What is the purpose of the 'functional' component option in Vue.js? Provide an example scenario where using a functional component is beneficial.

The 'functional' component option is used for stateless, presentational components. An example scenario is when you have a component that doesn't need to maintain internal state and is purely based on props.

Functional components in Vue.js are primarily for handling routing. An example scenario is when you want to create stateless components for different routes.

The 'functional' component option is used for styling in Vue.js. An example scenario is when you want to create components exclusively for applying styles to specific elements.

Functional components in Vue.js are specifically for handling user input. An example scenario is when you want to create dynamic and visually appealing form interactions.

22. What does Vue.js use to handle transitions between elements?

v-transition

v-animate

v-effect

v-move

23. What is the purpose of the 'errorCaptured' lifecycle hook in Vue.js? Provide an example scenario where using errorCaptured is beneficial.

The 'errorCaptured' lifecycle hook is used to capture and handle errors in the component and its children. An example scenario is when you want to log errors to a server or display a user-friendly error message.

ErrorCaptured in Vue.js is exclusively for handling user authentication errors. An example scenario is when you want to capture and handle errors related to user authentication.

The 'errorCaptured' lifecycle hook is used for server-side rendering. An example scenario is when you want to capture errors during the server-side rendering process.

ErrorCaptured in Vue.js is primarily for handling AJAX request errors. An example scenario is when you want to capture errors related to asynchronous API calls.

24. Which Vue.js feature is used for dynamic component loading?

v-dynamic

v-load

v-async

v-component

25. What is the purpose of Vue.js Transitions? Provide an example scenario where using transitions would be beneficial.

Vue.js Transitions are used for animating elements during state changes. An example scenario is when you want to smoothly transition the appearance or disappearance of elements in your application.

Transitions in Vue.js are exclusive to routing. An example scenario is when you want to add animation effects to page transitions.

Vue.js Transitions are specifically for handling user input. An example scenario is when you want to create dynamic and visually appealing form interactions.

Transitions in Vue.js are primarily for handling server requests. An example scenario is when you want to animate the loading and unloading of data.

26. What is the purpose of the 'v-pre' directive in Vue.js?

Prevent template compilation

Prevent data binding

Prevent rendering

Prevent event handling

27. In Vue.js, how can you handle user input using v-model?

By creating a custom method

By using the v-on directive

By using the v-input directive

By binding a data property

28. How can you handle user click events in Vue.js?

Using the v-click directive

Using the v-on directive

Using the v-event directive

Using the v-handler directive

29. What is the purpose of the 'v-for' directive in Vue.js?

To bind an attribute

To create a conditional statement

To loop over an array or object

To define a custom directive

30. Explain the concept of Vue.js Functional Components. Provide a use case where using functional components is preferable over standard components.

Vue.js Functional Components are stateless components that do not have a 'this' context. A use case is when you want to create lightweight, presentational components that are easy to test and reason about.

Functional Components in Vue.js are primarily for handling server requests. A use case is when you want to fetch data from the server and dynamically render components based on the received data.

Vue.js Functional Components are exclusive to styling. A use case is when you want to create components exclusively for applying styles to specific elements.

Functional Components in Vue.js are mainly for defining methods. A use case is when you want to encapsulate complex logic within a functional component.

Vue.js MCQ Test 3