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Vue.js Component Basics Quiz

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Question 1/15

What does the 'props' option in a Vue component do?

Select your answer

Lists the CSS styles for the component.

Specifies the data that can be passed into the component from its parent.

Specifies the global state of the application.

Lists events emitted by the component.

Question 2/15

How do you create a dynamic component in Vue?

<!-- Vue template -->
<component :is="currentComponent"></component>

Select your answer

Using 'v-show'.

Using 'v-if'.

Using ''.

Using 'v-for'.

Question 3/15

What is the purpose of the 'mounted' lifecycle hook in Vue?

Select your answer

It is called before the component is destroyed.

It is called after the component is added to the DOM.

It is called after the component has been updated.

It is called when the component's data changes.

Question 4/15

How do you conditionally apply CSS classes in Vue?

<!-- Vue template -->
<div :class="{ active: isActive, 'text-danger': hasError }"></div>

Select your answer

Using 'v-on'.

Using 'v-if'.

Using 'v-for'.

Using ':class'.

Question 5/15

How do you bind a JavaScript variable to an HTML element in a Vue template?

Select your answer

Using the 'v-for' directive.

Using the double curly braces ({{ }}).

Using the 'v-model' directive.

Using the 'v-bind' directive.

Question 6/15

What is a Vue component's 'name' option used for?

Select your answer

To provide an identifier for the component for debugging purposes.

To specify styles for the component.

To define the component's data properties.

To declare the component's methods.

Question 7/15

What does the 'transition' element do in Vue.js?

<transition name="fade">
  <p v-if="show">Hello</p>
</transition>

Select your answer

It provides state management.

It initializes Vue Router.

It manages CSS transitions/animations for components.

It creates an asynchronous component.

Question 8/15

How do you bind an event listener to a button click in Vue?

<!-- Vue template -->
<button @click="handleClick">Click me</button>

Select your answer

Using '@click'.

Using 'v-for:click'.

Using 'v-bind:click'.

Using 'v-model:click'.

Question 9/15

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

Select your answer

Adding new components dynamically.

Managing global state across components.

Storing individual component states.

Defining custom directives.

Question 10/15

What attribute is used to ensure keys are unique in lists rendered with 'v-for'?

<li v-for="item in items" :key="item.id">{{ item.name }}</li>

Select your answer

:id

:class

:key

:ref

Question 11/15

What is the purpose of the 'data' function in a Vue component?

Select your answer

To specify the component's methods.

To define the component's HTML template.

To import external scripts.

To store component's data that can be reactive.

Question 12/15

What is a Vue component's 'template' option used for?

Select your answer

To declare JavaScript functionality.

To list dependencies.

To inject CSS styles.

To define the component's HTML structure.

Question 13/15

How can you specify a default value for a prop in Vue.js?

props: {
  myProp: {
    type: String,
    default: 'Default Value'
  }
}

Select your answer

Using computed properties.

Using the 'methods' option.

Within the prop definition using 'default'.

Using the 'data' function.

Question 14/15

How can you centrally manage your application's state in Vue.js?

Select your answer

Using Vue Components.

Using the 'data' function.

Using Vue Router.

Using Vuex.

Question 15/15

Which directive would you use to two-way bind a data property to an input element?

<!-- Vue template -->
<input v-model="username" />

Select your answer

v-on

v-model

v-bind

v-if

Your Results

You did not answer any questions correctly.

Your Answers

Question 1/15

😊 Your answer was correct 🙁 Your answer was incorrect

What does the 'props' option in a Vue component do?

Available answers

Lists the CSS styles for the component.

Specifies the data that can be passed into the component from its parent.

Specifies the global state of the application.

Lists events emitted by the component.

The 'props' option in a Vue component is used to declare properties that can be passed from the parent component. These props allow the component to be more flexible and dynamic.

Question 2/15

😊 Your answer was correct 🙁 Your answer was incorrect

How do you create a dynamic component in Vue?

<!-- Vue template -->
<component :is="currentComponent"></component>

Available answers

Using 'v-show'.

Using 'v-if'.

Using '<component :is="">'.

Using 'v-for'.

Dynamic components in Vue are created with the '' syntax. The 'is' attribute determines which component to render, allowing for dynamic rendering based on changing data.

Question 3/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is the purpose of the 'mounted' lifecycle hook in Vue?

Available answers

It is called before the component is destroyed.

It is called after the component is added to the DOM.

It is called after the component has been updated.

It is called when the component's data changes.

The 'mounted' lifecycle hook is called after a Vue instance's component has been added to the DOM. It's commonly used for operations that require the component's elements to be present in the DOM.

Question 4/15

😊 Your answer was correct 🙁 Your answer was incorrect

How do you conditionally apply CSS classes in Vue?

<!-- Vue template -->
<div :class="{ active: isActive, 'text-danger': hasError }"></div>

Available answers

Using 'v-on'.

Using 'v-if'.

Using 'v-for'.

Using ':class'.

To conditionally apply CSS classes in Vue, you can use the ':class' binding. The provided code snippet shows how to apply 'active' and 'text-danger' classes based on the 'isActive' and 'hasError' conditions.

Question 5/15

😊 Your answer was correct 🙁 Your answer was incorrect

How do you bind a JavaScript variable to an HTML element in a Vue template?

Available answers

Using the 'v-for' directive.

Using the double curly braces ({{ }}).

Using the 'v-model' directive.

Using the 'v-bind' directive.

In Vue templates, you use the double curly braces ({{ }}) to bind JavaScript expressions to HTML elements. This is known as interpolation.

Question 6/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is a Vue component's 'name' option used for?

Available answers

To provide an identifier for the component for debugging purposes.

To specify styles for the component.

To define the component's data properties.

To declare the component's methods.

The 'name' option in a Vue component provides an identifier primarily used for debugging and in tools like Vue DevTools. It also helps with recursive components.

Question 7/15

😊 Your answer was correct 🙁 Your answer was incorrect

What does the 'transition' element do in Vue.js?

<transition name="fade">
  <p v-if="show">Hello</p>
</transition>

Available answers

It provides state management.

It initializes Vue Router.

It manages CSS transitions/animations for components.

It creates an asynchronous component.

The 'transition' element in Vue.js is used to apply CSS transitions and animations to elements entering or leaving the DOM. The provided snippet wraps a transitioning paragraph with the 'fade' transition.

Question 8/15

😊 Your answer was correct 🙁 Your answer was incorrect

How do you bind an event listener to a button click in Vue?

<!-- Vue template -->
<button @click="handleClick">Click me</button>

Available answers

Using '@click'.

Using 'v-for:click'.

Using 'v-bind:click'.

Using 'v-model:click'.

To bind an event listener for a button click in Vue, use the '@click' directive. It is shorthand for 'v-on:click'. In the code snippet, the click event triggers the 'handleClick' method.

Question 9/15

😊 Your answer was correct 🙁 Your answer was incorrect

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

Available answers

Adding new components dynamically.

Managing global state across components.

Storing individual component states.

Defining custom directives.

A Vuex store is a centralized state management solution for Vue.js applications. It allows for managing the global state across components to keep data in sync and consistent.

Question 10/15

😊 Your answer was correct 🙁 Your answer was incorrect

What attribute is used to ensure keys are unique in lists rendered with 'v-for'?

<li v-for="item in items" :key="item.id">{{ item.name }}</li>

Available answers

:id

:class

:key

:ref

The ':key' attribute is used in Vue.js with 'v-for' directives to ensure that items have a unique identity. This helps Vue to optimize rendering by detecting changes.

Question 11/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is the purpose of the 'data' function in a Vue component?

Available answers

To specify the component's methods.

To define the component's HTML template.

To import external scripts.

To store component's data that can be reactive.

The 'data' function in a Vue component returns an object. This object is reactive, meaning that Vue will automatically update the DOM when these properties change. It is used to store the component's state.

Question 12/15

😊 Your answer was correct 🙁 Your answer was incorrect

What is a Vue component's 'template' option used for?

Available answers

To declare JavaScript functionality.

To list dependencies.

To inject CSS styles.

To define the component's HTML structure.

The 'template' option in a Vue component is used to define the component's HTML structure. It describes how the component should render based on its data.

Question 13/15

😊 Your answer was correct 🙁 Your answer was incorrect

How can you specify a default value for a prop in Vue.js?

props: {
  myProp: {
    type: String,
    default: 'Default Value'
  }
}

Available answers

Using computed properties.

Using the 'methods' option.

Within the prop definition using 'default'.

Using the 'data' function.

In Vue.js, you can specify a default value for a prop by including a 'default' field within the prop definition. The provided code snippet shows how to set 'Default Value' as the default for 'myProp'.

Question 14/15

😊 Your answer was correct 🙁 Your answer was incorrect

How can you centrally manage your application's state in Vue.js?

Available answers

Using Vue Components.

Using the 'data' function.

Using Vue Router.

Using Vuex.

In Vue.js, the centralized state management can be achieved using Vuex, which is an official state management pattern + library for Vue.js applications.

Question 15/15

😊 Your answer was correct 🙁 Your answer was incorrect

Which directive would you use to two-way bind a data property to an input element?

<!-- Vue template -->
<input v-model="username" />

Available answers

v-on

v-model

v-bind

v-if

The 'v-model' directive in Vue creates a two-way data binding on form input, textarea, and select elements. The code snippet shows using 'v-model' to bind the 'username' property to an input element.