Vue Js Online Test

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This practice test has 20 questions
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1. Which directive can be used to prevent the default form submission behavior in Vue?

v-on:submit.prevent v-bind:submit.prevent v-model:submit.prevent v-form-input:prevent

2. What tool can you use for end-to-end testing of Vue.js applications?

Cypress Karma Jest Mocha

3. In Vue Router, what is the purpose of the beforeEach navigation guard?

To specify the route layout To define route parameters To perform actions before each route change To protect routes from unauthorized access

4. How do you commit a mutation in Vuex?

Using this.mutate('mutationName') Using commit('mutationName') Using dispatch('mutationName') Using state('mutationName')

5. 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

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

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

7. What command is used to create a new Vue.js project using Vue CLI?

vue create project-name create-vue project-name vue new project-name npm init vue project-name

8. How do you define a Vue component in a Vue application?

Using the new Component() syntax Using the Vue.component() method Using the createComponent() method Using the defineComponent() method

9. What is the Vue.js ecosystem primarily centered around?

Front-end web development Back-end web development Mobile application development Game development

10. Which command is used to install Vue CLI globally?

npm install vue-cli -g npm add vue-cli -g npm vue-cli -g npm global add vue-cli

11. In Vue Resource, what is the role of the params option in an HTTP request?

To define route parameters To include query parameters To specify request headers To define request data

12. How can you validate user input in a Vue form?

Using the v-validate directive Using v-bind directive Using the v-model directive Using v-validate event

13. In Vue, what is the purpose of the @ symbol when specifying event handlers in templates?

It's a shorthand for v-on It represents a component It indicates a computed property It defines a custom event

14. What is the purpose of pluralization in Vue Internationalization (i18n)?

To support multiple languages To manage routing To handle singular and plural forms To create custom directives

15. Which directive is used to bind an attribute's value to an expression in Vue?

v-on v-bind v-show v-model

16. Who developed Vue.js?

Facebook Google Microsoft Evan You

17. Which Vue Router navigation method allows you to go back to the previous route?

$router.navigateBack() $router.back() $router.previous() $router.go(-1)

18. What is Vuex used for in a Vue.js application?

Managing routing Managing state across components Handling user interface transitions Data validation

19. What does the v-model directive enable in Vue templates?

Event handling Two-way data binding Looping over arrays Conditional rendering

20. What is the primary purpose of Vue custom filters?

To define custom behavior on elements To format data in templates To manage routing To create Vue components