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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
Which of the following directives is to used for attaching event listeners that invoke methods?
v-for
v-on
v-model
v-bind
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3/25
What data binding interpolation is commonly known as “Mustache” syntax?
[]
v-model
{{}}
v-on
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4/25
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 })
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5/25
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>
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6/25
All are life cycle hooks in Vue except ...
beforeCreate
created
mounted
beforeMount
didMount
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7/25
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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8/25
How can you pass data from a parent to a child component in Vue.js?
Using the $emit method
Using the $parent property
Using props
Using global state management
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9/25
How do you conditionally render elements in a Vue.js template?
Using the 'v-for' directive
Using the 'v-model' directive
Using the 'v-if', 'v-else-if', and 'v-else' directives
Using the 'v-show' directive
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10/25
In Vue.js, how do you iterate over an array of items in a template?
Using the 'v-if' directive
Using the 'v-for' directive
Using the 'v-model' directive
Using the 'v-bind' directive
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11/25
In Vue.js, how can you listen to native DOM events on a custom component?
Using the '.native' modifier on a 'v-on' directive
Using the 'v-model' directive
Using the 'v-if' directive
Using the 'v-show' directive
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12/25
What is the default port number Vue CLI serves the application on?
3000
8080
8000
5000
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13/25
Which method is used to programmatically navigate to a different route in Vue.js using Vue Router?
this.$route.navigate('/path')
this.$router.push('/path')
Vue.navigate('/path')
this.$router.goto('/path')
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14/25
In Vue.js, which option is used to define a component's initial data state?
data: {}
state: {}
model: {}
props: {}
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15/25
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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16/25
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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17/25
In Vue.js, how can you access the root Vue instance within a component?
this.$root
Vue.$root
this.$parent.root
this.root
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18/25
What is the purpose of the 'static' keyword in a Vue.js component?
To create a static method in a component
To prevent reactivity on a property
To indicate that a property should not be included in the template
To make a property globally accessible
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19/25
What is the primary purpose of the 'v-bind' directive's .sync modifier in Vue.js?
To synchronize data between parent and child components
To keep the model and view in sync
To automatically update a prop when its bound value changes
To sync component methods
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20/25
In Vue.js, what is the effect of using the 'v-once' directive on a component?
It destroys the component after one use
It renders the component only once, and subsequent re-renders are ignored
It listens for an event only once
It applies a CSS class to an element only once
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21/25
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
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22/25
What is the main purpose of the 'beforeRouteEnter' navigation guard in Vue Router?
To modify route parameters before entering a route
To perform actions before the route is confirmed
To prevent navigation to a new route
To load data before entering a route
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23/25
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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24/25
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)
Next >
25/25
Which Vue.js directive is used to bind an event listener to an element?
v-bind
v-model
v-on
v-for
Next >
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