Question:-1 How to initialize the root instance in Vue JS (using the CDN method)?
a) var app = Vue new({…});
b) var app = Vue.new({…});
c) var app = Vue({…});
d) var app = new Vue({…});
Answer:- var app = new Vue({…});
Question:-2 The following attributes can be used for conditional rendering, except __________.
a) v-show
b) v-ifelse
c) v-else
d) v-if
Answer:- v-ifelse
Question:-3 Which is the simplest way to perform attribute binding?
a) <span :title:=”vue_var”>Some text</span>
b) <span title=”vue_var”>Some text</span>
c) <span title:=”vue_var”>Some text</span>
d) <span :title=”vue_var”>Some text</span>
Answer:- <span :title=”vue_var”>Some text</span>
Question:-4 What is the shorthand way to invoke a function when a click event is fired?
a) #click
b) $click
c) @click
d) %click
Answer:- @click
Question:-5 Vue CLI can be installed using _________.
a) npm install -g vuecli
b) npm install -g vue-cli
c) npm install -g @vue/cli
d) npm install -g vue
Answer:- npm install -g @vue/cli
Question:-6 Which among the following is/are cached in the browser?
a) Computed method
b) Normal method
c) Both computed and normal methods
d) None of the options
Answer:- Computed method
Question:-7 Communicating events allow data communication in which of the following ways?
a) From root instance to the component
b) From component to the root instance
c) Both the options
Answer:- Both the options
Question:-8 Vue JS provides different attributes and directives for the Tab display of a web page.
a) True
b) False
Answer:- False
Question:-9 There can be more than one root element in the template of a component.
a) True
b) False
Answer:- False
Question:-10 Vue JS provides the feature to validate and display validation error messages.
a) True
b) False
Answer:- True
Question:-11 Vue JS allows changing the font size of a text dynamically.
a) True
b) False
Answer:- True
Question:-12 Which concept of Vue JS helps to modularize code?
a) Components
b) Tabs
c) Event handling
d) Forms
Answer:- Components
Question:-13
<p v-if=”counterVar % 2 == 0″> Value is even </p>
<p v-else> Value is odd </p>
<button v-on:click=”___________________”>Click Me!</button>
Assuming that counterVar variable has been initialized to 0, what must be filled in the click event handling mechanism?
a) Both the options
b) None of the options
c) counterVar++
d) counterVar + 1
Answer:- counterVar + 1
Question:-14 To pass the variable value from component to root instance, which method is employed in a Vue JS application?
a) Attribute binding
b) Event handling
c) Forms
d) Communicating Events
Answer:- Communicating Events
Question:-15 How many sections does a component have?
a) 1
b) 2
c) 3
d) 4
Answer:- 1
Question:-16 Which is the attribute in component to define variables?
a) Data
b) Props
c) Template
d) Computed
Answer:- Data
Question:-17 Which attribute in JavaScript/Vue JS is used to pass a variable value from parent component to child component?
a) Methods
b) Props
c) Computed
d) Template
Answer:- Computed
Question:-18 Which Vue attribute is used to display an HTML element based on a condition?
a) Both the options
b) v-if
c) v-show
d) None of the options
Answer:- v-show
Question:-19 What is the syntax to invoke the method handleUserClick when the user clicks a button?
a) <button v-on:click=”handleUserClick”>Click Me!</button>
b) <button :click=”handleUserClick”>Click Me!</button>
c) Both the options
d) None of the options
Answer:- <button v-on:click=”handleUserClick”>Click Me!</button>
Question:-20 What is the syntax to bind a Vue variable domTitle with an attribute?
a) <span v-bind:title=”domTitle”></span>
b) <span :title=”domTitle”></span>
c) None of the options
d) Both the options
Answer:- <span v-bind:title=”domTitle”></span>
Question:-21 An array of objects can be iterated using v-for.
a) True
b) False
Answer:- True
Question:-22
<course-section @get-marks=”getMarks”></course-section>
var marks = 100;
this.$emit(___________________);
The developer needs to pass the value of marks to its parent component. Fill in the blank with the correct answer.
a) { event: ‘get-marks’, parameters: [marks] }
b) marks, ‘get-marks’
c) ’getMarks’, marks
d) ‘get-marks’, marks
Answer:- ‘get-marks’, marks
Question:-23 A developer must not only know HTML and CSS but should also know JavaScript to develop front-end applications using Vue JS. Do you agree?
a) Yes
b) No
Answer:- Yes
Question:-24 A component in Vue JS can have multiple components within it.
a) True
b) False
Answer:- True
Question:-25 Vue JS can also be used to develop controller code.
a) True
b) False
Answer:- True
Question:-26 Changes in the Vue variable reflects in the HTML element attributes. This concept is known as ________.
a) Element binding
b) Attribute binding
c) Variable binding
d) HTML binding
Answer:- Variable binding
Question:-27
<form @submit.prevent=”validateSubmit”>…</form>
What does @submit.prevent do?
a) Invokes the validateSubmit method before the usual submit action is executed.
b) Irrespective of the method definition in validateSubmit, default submit action will be executed.
Answer:- Invokes the validateSubmit method before the usual submit action is executed.
Question:-28 Which of the following statements is true?
a) Vue JS provides a mechanism to display an HTML element based on a Boolean condition.
b) Displaying an HTML element based on a Boolean condition is not possible in Vue JS.
Answer:- Vue JS provides a mechanism to display an HTML element based on a Boolean condition.
Question:-29
<p v-if=”counterVar % 2 == 0″> Value is even </p>
<p v-else> Value is odd </p>
<button v-on:click=”___________________”>Click Me!</button> Assuming that counterVar variable has been initialized to 0, what must be filled in the click event handling mechanism?
a) counterVar + 1
b) counterVar++
c) Both the options
d) None of the options
Answer:- Both the options
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