Vue.js is a progressive JavaScript framework for building user interfaces, designed to be approachable, versatile, and performant. Created by Evan You and first released in 2014, Vue has gained popularity for its simplicity and ease of integration into existing projects. It uses a component-based architecture, where applications are constructed from reusable, self-contained components that manage their own state and logic.
At its core, Vue employs a reactive data-binding system, allowing developers to automatically update the DOM when data changes, which streamlines development and reduces manual updates. Key features include the declarative rendering of HTML templates, a robust reactivity system, and built-in directives for common tasks like event handling and conditional rendering.
Vue’s ecosystem is extensive, with tools like Vue Router for navigation, Vuex for state management, and Vue CLI for project scaffolding. It’s ideal for a wide range of applications, from small-scale widgets to large single-page applications (SPAs). Its gentle learning curve makes it accessible for beginners, while advanced features like the Composition API support complex, scalable codebases.
As an open-source project, Vue benefits from a large community, regular updates, and excellent documentation, making it a strong choice for modern web development. Its performance optimizations, such as the virtual DOM, ensure efficient rendering, and it integrates seamlessly with other libraries or existing codebases.
Table of contents
- Part 1: OnlineExamMaker AI quiz generator – Save time and efforts
- Part 2: 20 Vue quiz questions & answers
- Part 3: Automatically generate quiz questions using AI Question Generator
Part 1: OnlineExamMaker AI quiz generator – Save time and efforts
Still spend a lot of time in editing questions for your next Vue assessment? OnlineExamMaker is an AI quiz maker that leverages artificial intelligence to help users create quizzes, tests, and assessments quickly and efficiently. You can start by inputting a topic or specific details into the OnlineExamMaker AI Question Generator, and the AI will generate a set of questions almost instantly. It also offers the option to include answer explanations, which can be short or detailed, helping learners understand their mistakes.
What you may like:
● Automatic grading and insightful reports. Real-time results and interactive feedback for quiz-takers.
● The exams are automatically graded with the results instantly, so that teachers can save time and effort in grading.
● LockDown Browser to restrict browser activity during quizzes to prevent students searching answers on search engines or other software.
● OnlineExamMaker API offers private access for developers to extract your exam data back into your system automatically.
Automatically generate questions using AI
Part 2: 20 Vue quiz questions & answers
or
1. What is Vue.js primarily used for?
A. Building server-side applications
B. Creating user interfaces and single-page applications
C. Managing databases
D. Developing mobile apps without web technology
Answer: B
Explanation: Vue.js is a progressive JavaScript framework designed for building user interfaces and efficient single-page applications.
2. Which directive is used to conditionally render an element in Vue.js?
A. v-show
B. v-if
C. v-else
D. v-bind
Answer: B
Explanation: The v-if directive renders elements based on the truthiness of the expression, completely adding or removing them from the DOM.
3. How does Vue.js handle data reactivity?
A. By using global variables
B. Through a virtual DOM and observer pattern
C. With manual DOM manipulation
D. By reloading the page on data changes
Answer: B
Explanation: Vue.js uses a virtual DOM and an observer pattern to detect changes in data and update the actual DOM efficiently.
4. What is the purpose of the mounted lifecycle hook in Vue.js?
A. To initialize data before the component is created
B. To perform actions after the component has been mounted to the DOM
C. To clean up resources when the component is destroyed
D. To watch for data changes
Answer: B
Explanation: The mounted hook is called after the component has been added to the DOM, making it ideal for DOM-dependent operations.
5. In Vue.js, how do you pass data from a parent component to a child component?
A. Using events
B. With props
C. Through global variables
D. Via the data option
Answer: B
Explanation: Props allow parent components to pass data to child components, enabling reusable and modular code.
6. What does the v-model directive do in Vue.js?
A. Binds a value to an attribute
B. Creates two-way data binding on form inputs
C. Loops through an array
D. Conditionally shows an element
Answer: B
Explanation: v-model simplifies two-way data binding, syncing the value of form inputs with the component’s data.
7. Which of the following is a key feature of Vue Router?
A. Automatic server rendering
B. Nested route configuration
C. Built-in state management
D. Direct DOM manipulation
Answer: B
Explanation: Vue Router supports nested routes, allowing for complex navigation structures in single-page applications.
8. How do computed properties differ from methods in Vue.js?
A. Computed properties are not reactive
B. Methods are cached based on their dependencies
C. Computed properties cache results and only re-evaluate when dependencies change
D. Methods can only be used in templates
Answer: C
Explanation: Computed properties are optimized for performance as they cache results, unlike methods which are called every time they are used.
9. What is Vuex primarily used for in a Vue.js application?
A. Handling HTTP requests
B. Managing global state across components
C. Rendering templates
D. Animating elements
Answer: B
Explanation: Vuex is a state management pattern and library that centralizes the application’s state, making it easier to manage shared data.
10. In Vue.js, how do you emit an event from a child component to a parent?
A. Using v-on
B. With the $emit method
C. Through props
D. Via global events
Answer: B
Explanation: The $emit method allows child components to send custom events to parent components, facilitating communication.
11. What is the role of the created lifecycle hook?
A. To handle component destruction
B. To perform actions after the instance is created but before mounting
C. To update the DOM
D. To initialize routes
Answer: B
Explanation: The created hook is called after the instance is created, allowing access to reactive data before the DOM is mounted.
12. Which option is used to define reactive data in a Vue component?
A. methods
B. computed
C. data
D. props
Answer: C
Explanation: The data option defines the reactive state of the component, which Vue tracks for changes.
13. How does Vue.js handle template compilation?
A. It compiles templates at runtime only
B. Templates can be compiled at build time for better performance
C. Templates are not compiled and used as-is
D. Compilation is handled by the browser
Answer: B
Explanation: Vue.js supports compiling templates at build time using tools like Vue CLI, which improves initial load performance.
14. What is a slot in Vue components?
A. A way to define global styles
B. A placeholder for content distributed by the parent component
C. A type of data binding
D. An event handler
Answer: B
Explanation: Slots allow content from a parent component to be projected into a child component, promoting reusability.
15. In Vue.js, how do you watch for changes in a specific data property?
A. Using the watch option
B. With computed properties
C. Through the methods option
D. Via v-on directives
Answer: A
Explanation: The watch option lets you observe and react to changes in specific data properties with a handler function.
16. What does the key attribute do in a v-for loop?
A. It sorts the array
B. It helps Vue track elements for efficient updates
C. It binds data to the element
D. It conditionally renders items
Answer: B
Explanation: The key attribute in v-for provides a unique identifier, allowing Vue to optimize DOM updates by tracking element identity.
17. How can you make an asynchronous request in a Vue component?
A. Using the async data option
B. With the mounted hook and fetch or Axios
C. Directly in the template
D. Through computed properties
Answer: B
Explanation: The mounted hook is commonly used to make API calls, as the component is ready for DOM interactions.
18. What is the difference between v-if and v-show?
A. v-if is for styling, v-show for rendering
B. v-if removes the element from the DOM, v-show toggles visibility with CSS
C. v-show is more performant
D. They are identical
Answer: B
Explanation: v-if conditionally renders and removes elements, while v-show uses display: none to hide them without removing from the DOM.
19. In Vuex, what is a mutation?
A. A way to fetch data asynchronously
B. The only way to change state in a predictable manner
C. A computed property in the store
D. An action dispatched from components
Answer: B
Explanation: Mutations are synchronous functions that directly modify the Vuex store’s state, ensuring changes are traceable.
20. How do you create a global component in Vue.js?
A. Using the components option in the main instance
B. With Vue.component before mounting the app
C. Inside a local component file
D. Through props
Answer: B
Explanation: Vue.component registers a component globally, making it available throughout the application without local registration.
or
Part 3: Automatically generate quiz questions using OnlineExamMaker AI Question Generator
Automatically generate questions using AI