Test Your Vue.js Basics Knowledge - Can You Ace Our 25-Question Quiz?

1/25 What are the advantages of using Vue.js?

Small in size — The size is 18 to 21KB. It requires no time for the user to download and apply it.
Easily understandable — One of the reasons for the popularity of this framework is that it is quite easy to understand. Users can easily add Vue.js to their web project due to its simple structure.
Straightforward integration- you can easily integrate it with the existing applications.
Virtual DOM — It is capable of using the virtual DOM like other existing frameworks such as ReactJS, Ember, and so on. Virtual DOM is considered a lightweight in-memory tree representation of the original HTML DOM and updated without impacting the origina
All of the above

2/25 Which of the following directives is to used for attaching event listeners that invoke methods?

v-for
v-on
v-model
v-bind

3/25 How to use for loop in Vue.js?

vFor
*v-for
v-for
*ngFor

4/25 What is the correct way of installing the vue cli globally?

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

5/25 Which is the correct way of generating a new instance in Vue.js?

var text = new Vue({ // options })
var text = new vue(){ // options }
var text = new object({ // options })
var text = new text({ // options })

6/25 What event modifier is used for performing the click event only for one time?

<a @click.once="dotask"></a>
<a @click.prevent-once="dotask"></a>
<a @click.stop="dotask"></a>
<a @click.passive="dotask"></a>

7/25 V-show does not support the <template> element.

True
False

8/25 What is the difference between v-show and v-if directives?

v-if only renders the element to the DOM if the expression passes whereas v-show renders all elements to the DOM and then uses the CSS display property to show/hide elements based on expression.
v-if supports v-else and v-else-if directives whereas v-show doesn't support else directives.
v-if supports tab but v-show doesn't support.
All of the above

9/25 V-model directive is used in ...

two-way data binding where the view(UI) part of application automatically updates when data Model is changed.
two-way data binding where the view(UI) part of application does not update automatically. We need to write some custom code to make it updated every time a data model is changed.
one-way data binding where the view(UI) part of application automatically updates when data Model is changed.
one-way data binding where the view(UI) part of application does not updates automatically. Some custom code should be written for making it updated every time a data model is modified.

10/25 Which Vue.js lifecycle hook should be used for fetching data when a component is created?

mounted
created
beforeCreate
beforeMount

11/25 In Vue.js, what is a 'directive' primarily used for?

To manage state
To perform HTTP requests
To manipulate the DOM
To define methods

12/25 Which command is used to create a new Vue.js project using Vue CLI?

vue create project-name
vue new project-name
vue init project-name
vue start project-name

13/25 Which lifecycle hook in Vue.js is called right after the DOM has been updated?

created
beforeUpdate
updated
mounted

14/25 In Vue.js, which option is used to define a component's initial data state?

data: {}
state: {}
model: {}
props: {}

15/25 What is the purpose of using 'v-bind' with a class in Vue.js?

To bind a method to a class
To dynamically bind one or more class names to an element
To attach an event listener to a class
To conditionally display a class

16/25 Which Vue.js feature is used to transform props into local, reactive data?

Computed properties
Watchers
Data properties
Props down, events up

17/25 Which statement is true about the 'destroyed' lifecycle hook in Vue.js?

It is called before the component is removed from the DOM
It is used to clean up event listeners and reactive subscriptions
It can be used to prevent a component from being destroyed
It is called immediately after the component is created

18/25 What is the purpose of the 'name' property in a Vue.js component?

To specify the name used in the DOM
To define the component's name for recursive calls
To set the name attribute on the root element
To identify the component in Vue Devtools

19/25 In Vue.js, what is the 'el' property used for in a Vue instance?

To define the element to mount the Vue instance on
To specify the parent element for the instance
To declare reactive properties
To set the template for the instance

20/25 Which method is commonly used for manual reactivity in Vue.js?

Vue.set(object, key, value)
Vue.reactify(object, key, value)
this.$forceUpdate()
Vue.observable(object)

21/25 How can you define local state in a Vue.js component?

Using the 'state' option
Using the 'data' function
Using the 'computed' property
Using the 'methods' property

22/25 What is the primary use of the 'props' option in a Vue.js component?

To pass data to child components
To receive data from parent components
To store internal component state
To define computed properties

23/25 What is the purpose of the 'nextTick' method in Vue.js?

To delay a function execution until the next DOM update cycle
To navigate to the next route in Vue Router
To proceed to the next item in a v-for loop
To update data properties in the next component update

24/25 Which of the following is true about Vue.js mixins?

Mixins are primarily used for styling components
Mixins are used to distribute reusable functionalities for Vue components
Mixins can only be applied globally
Mixins override the component's own methods and properties

25/25 In Vue.js, what is the recommended way to pass data to a child component?

Using 'v-bind' to bind data to the child component's attributes
Directly setting properties on the child component instance
Using a global event bus
By modifying the child component's 'data' object

Image for the last page of the Certificate