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Vue.js Basics
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
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2/25
How to use for loop in Vue.js?
vFor
*v-for
v-for
*ngFor
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3/25
Once a View Model is destroyed, all the event listeners are automatically deleted.
True
False
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4/25
V-show does not support the <template> element.
True
False
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5/25
Which of the following is the full form of MVVM?
Model-View-ValueModel
Model-Value-ValueModel
Model-View-ViewModel
Module-Value-ViewModel
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6/25
In Vue.js, what is the role of the 'watch' property?
To perform deep object comparisons
To execute a function when a specific data property changes
To bind data to template elements
To loop through items in an array
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7/25
How can you pass data from a parent to a child component in Vue.js?
Using the $emit method
Using the $parent property
Using props
Using global state management
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8/25
How do you access a parent component's methods from a child component?
Using this.$parent.methodName()
Using this.$child.methodName()
Using Vue.parent.methodName()
This is not possible in Vue.js
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9/25
What is the purpose of the 'key' attribute in a v-for directive in Vue.js?
To provide a unique identifier for each element
To optimize list rendering
To define the order of elements
To bind data to list items
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10/25
In Vue.js, what is the purpose of the 'v-cloak' directive?
To conditionally render elements
To delay the rendering of a component
To prevent flickering of uncompiled content
To cloak sensitive data
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11/25
What is the main purpose of using 'slots' in Vue.js components?
To inject content into a component from its parent
To manage global state
To store data
To perform data binding
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12/25
In Vue.js, which is the correct way to register a local component?
Vue.component('my-component', {})
components: {'my-component': {}}
Vue.register('my-component', {})
Vue.use('my-component', {})
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13/25
What is the main use of the 'v-pre' directive in Vue.js?
To pre-load data before rendering a component
To skip compilation for this element and all its children
To give priority rendering to an element
To preserve the original state of an element
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14/25
Which Vue.js feature is used to transform props into local, reactive data?
Computed properties
Watchers
Data properties
Props down, events up
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15/25
What is the correct way to declare a reactive property in a Vue.js component that is not part of the data object?
Vue.reactiveProperty('newProp')
this.$set(this, 'newProp', value)
this.newProp = Vue.observable(value)
Vue.defineProperty(this, 'newProp', { value })
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16/25
In Vue.js, what does the 'functional' attribute in a component definition do?
It makes the component stateful
It indicates the component is purely functional and stateless
It enhances the performance of the component
It allows the component to maintain its own state
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17/25
In Vue.js, which of the following is a correct way to make a deep watch on an object?
watch: { 'object': { deep: true } }
watch: { object: { handler: 'method', deep: true } }
watch: { object.deep: 'method' }
this.$watch('object', 'method', { deep: true })
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18/25
How can you dynamically bind multiple attributes to an element in Vue.js?
Using v-bind with an object
Using multiple v-bind directives
Using a computed property
It's not possible to bind multiple attributes dynamically
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19/25
In Vue.js, what is the primary use of the 'provide/inject' feature?
To pass data from parent to child components
To inject services or dependencies into a component
To manage global state
To provide reactive data sources
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20/25
How do you declare a prop in Vue.js that has a default value and validation?
props: { propName: { default: value, validator: function } }
props: ['propName', default: value, validate: function]
props: { propName: value, validator: function }
props: { propName: { value, validator: function } }
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21/25
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
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22/25
In Vue.js, how does the 'v-model' directive work with a checkbox input?
It binds to the 'checked' property of the checkbox
It binds to the 'value' attribute of the checkbox
It toggles the 'disabled' state of the checkbox
It is not applicable for checkbox inputs
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23/25
Which Vue.js directive is used to bind an event listener to an element?
v-bind
v-model
v-on
v-for
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24/25
In Vue.js, what does the 'mounted' lifecycle hook represent?
The component is about to be mounted
The component has been inserted into the DOM
The component's data has been initialized
The component is about to be updated
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25/25
In Vue.js, what is the purpose of the 'ref' attribute?
To reference a DOM or component instance
To define a repeating element in 'v-for'
To store data references for reactivity
To set up a two-way data binding
Next >
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