O Level Web Designing Chapter-6 2024 Most Important Practice MCQ

आज मैं आपके लिए O Level Web Designing Chapter-6 2024 Most Important Practice MCQ लेकर आया हूँ।
इस प्रैक्टिस सेट में हम चैप्टर Chapter 6: JavaScript and Angular JS Practice Set से सभी इम्पोर्टेन्ट प्रश्न
जो की पिछले परीक्षा में आया हुआ है वो आप सभी के साथ प्रैक्टिस सेट के रूप में
शेयर कर रहा हूँ ताकि आपका इंस्टेंट टेस्ट भी हो जाये और आपका नॉलेज भी बढ़ जाए। 😊

इसे अपने दोस्तों के साथ शेयर करना न भूले!, 👉 चलिए अब शुरू करते है let's get Started.

Question No. -

The web development environment (JavaScript) offers which standard construct for data validation of the input entered by the user.
वेब डेवलपमेंट एनवायरनमेंट (जावास्क्रिप्ट) उपयोगकर्ता द्वारा दर्ज किए गए इनपुट के डेटा वेलिडेशन के लिए कौन सा मानक निर्माण प्रदान करता है।

A. Controlled loop constructs

B. Server page access

C. Client side Event

D. Permit server-side

Question No. -

The main purpose of a “Live Wire” in NetScape is to ________
नेटस्केप में "लाइव वायर" का मुख्य उद्देश्य ________ है

A. Create linkage between client side and server side

B. Permit server side, JavaScript code, to connect to RDBMS

C. Support only non relational database

D. To interpret JavaScript code

Question No. -

The script tag must be placed in __________
स्क्रिप्ट टैग को __________ में रखा जाना चाहिए

A. the head tag

B. the head or body

C. the title or head

D. after the body tag

Question No. -

JavaScript is ideal to ________
जावास्क्रिप्ट ________ के लिए आदर्श है

A. make computations in HTML simpler

B. minimize storage requirements on the web server

C. increase the download time for the client

D. increase the loading time of the website

Question No. -

Which attribute is used to specify that the script is executed when the page has finished parsing? (only for external scripts)
यह निर्दिष्ट करने के लिए किस विशेषता का उपयोग किया जाता है कि जब पेज का विश्लेषण समाप्त हो जाता है तो स्क्रिप्ट निष्पादित हो जाती है? (केवल बाहरी लिपियों के लिए)

A. parse

B. a sync

C. defer

D. type

Question No. -

JavaScript can be written __________
जावास्क्रिप्ट को __________ लिखा जा सकता है

A. directly into JS file and included into HTML

B. directly on the server page

C. directly into HTML pages

D. directly into the css file

Question No. -

Which of the following Attribute is used to include External JS code inside your HTML Document?
आपके HTML डाक्यूमेंट के अंदर बाहरी JS कोड को शामिल करने के लिए निम्नलिखित में से किस विशेषता का उपयोग किया जाता है?

A. src

B. ext

C. script

D. link

Question No. -

A proper scripting language is a __________
एक उचित स्क्रिप्टिंग लैंग्वेज एक __________ है

A. High level programming language

B. Assembly level programming language

C. Machine level programming language

D. Low level programming language

Question No. -

The property of a primary expression is ____________
प्राइमरी एक्सप्रेशन का गुण _________ है

A. stand-alone expressions

B. basic expressions containing all necessary functions

C. contains variable references alone

D. contains only keywords

Question No. -

The expression of calling (or executing) a function or method in JavaScript is called ________
जावास्क्रिप्ट में किसी फ़ंक्शन या विधि को कॉल करने (या एक्सेक्यूटिंग) करने के एक्सप्रेशन को ________ कहा जाता है

A. Primary expression

B. Functional expression

C. Invocation expression

D. Property Access Expression

Question No. -

What kind of expression is “new Point(2,3)”?
"न्यू पॉइन्ट(2,3)" किस प्रकार का एक्सप्रेशन है?

A. Primary Expression

B. Object Creation Expression

C. Invocation Expression

D. Constructor Calling Expression

Question No. -

Which of the operator is used to test if a particular property exists or not?
किसी विशेष प्रॉपर्टी के exists होने या न होने का टेस्ट करने के लिए किस ऑपरेटर का यूज़ किया जाता है?

A. in

B. exist

C. within

D. exists

Question No. -

Among the following, which one is a ternary operator?
निम्नलिखित में से कौन एक टर्नरी ऑपरेटर है?

A. +

B. :

C. –

D. ?:

Question No. -

“An expression that can legally appear on the left side of an assignment expression.” is a well known explanation for variables, properties of objects, and elements of arrays. They are called ___________
"एक एक्सप्रेशन जो लीगली रूप से एक असाइनमेंट एक्सप्रेशन के लेफ्ट साइड दिखाई दे सकती है।" वेरिएबल,ऑब्जेक्ट्स के प्रॉपर्टीज और एरेस के एलिमेंट्स के लिए एक प्रसिद्ध व्याख्या है। वे कहते हैं

A. Properties

B. Prototypes

C. Lvalue

D. Definition

Question No. -

JavaScript is a _______________ language.
जावास्क्रिप्ट एक __________ लैंग्वेज है।

A. Object-Oriented

B. High-level

C. Assembly-language

D. Object-Based

Question No. -

A conditional expression is also called a _______________
एक कंडीशनल एक्सप्रेशन को __________ भी कहा जाता है

A. Alternative to if-else

B. Immediate if

C. If-then-else statement

D. Switch statement

Question No. -

What is a block statement in JavaScript?
जावास्क्रिप्ट में ब्लॉक स्टेटमेंट क्या है?

A. conditional block

B. block that contains a single statement

C. both conditional block and a single statement

D. block that combines multiple statements into a single compound statement

Question No. -

When an empty statement is encountered, a JavaScript interpreter __________
जब एक एम्प्टी स्टेटमेंट का सामना करना पड़ता है, एक जावास्क्रिप्ट इंटरप्रेटर __________

A. Ignores the statement

B. Prompts to complete the statement

C. Throws an error

D. Shows a warning

Question No. -

The “var” and “function” are __________
“var” और “function” __________ हैं

A. Keywords

B. Declaration statements

C. Data types

D. Prototypes

Question No. -

The enumeration order becomes implementation dependent and non-interoperable if ___________

A. If the object inherits enumerable properties

B. The object does not have the properties present in the integer array indices

C. The delete keyword is never used

D. Object.defineProperty() is not used

Question No. -

What are the three important manipulations done in a for loop on a loop variable?
लूप वेरिएबल पर लूप के लिए थ्री इम्पोर्टेन्ट मैनीपुलेशन क्या हैं?

A. Updation, Incrementation, Initialization

B. Initialization,Testing, Updation

C. Testing, Updation, Testing

D. Initialization,Testing, Incrementation

Question No. -

One of the special features of an interpreter in reference with the for loop is that ___________
लूप के रेफ़्रेन्स में इंटरप्रेटर की एक विशेष फ़ीचर्स यह है कि ___________

A. Before each iteration, the interpreter evaluates the variable expression and
assigns the name of the property

B. The iterations can be infinite when an interpreter is used

C. The body of the loop is executed only once

D. the iteration is finite when an interpreter is used

Question No. -

What will happen if the body of a for/in loop deletes a property that has not yet been enumerated?
क्या होगा यदि लूप के लिए/लूप की बॉडी एक ऐसी प्रॉपर्टी को हटा देता है जिसे अभी तक एन्यूमरेट नहीं किया गया है?

A. The property will be stored in a cache

B. The loop will not run

C. That property will not be enumerated

D. The property will be enumerated

Question No. -

What will be the step of the interpreter in a jump statement when an exception is thrown?
जब एक अपवाद फेंका जाता है तो जंप स्टेटमेंट में इंटरप्रेटर का स्टेप क्या होगा?

A. The interpreter stops its work

B. The interpreter throws another exception

C. The interpreter jumps to the nearest enclosing exception handler

D. The interpreter throws an error

Question No. -

Among the keywords below, which one is not a statement?
नीचे दिए गए कीवर्ड्स में से कौन सा स्टेटमेंट नहीं है?

A. debugger

B. with

C. if

D. use strict

Question No. -

The unordered collection of properties, each of which has a name and a value is called _________
गुणों का अनियंत्रित कलेक्शन, जिनमें से प्रत्येक का एक नाम और एक वैल्यू होता है, _________ कहलाता है

A. String

B. Object

C. Serialized Object

D. Array

Question No. -

The object has three object attributes namely ________
ऑब्जेक्ट की तीन ऑब्जेक्ट ऐट्रिब्यूट्स हैं, अर्थात् ________

A. Class, parameters, object’s extensible flag

B. Prototype, class, objects’ parameters

C. Prototype, class, object’s extensible flag

D. Native object, Classes and Interfaces and Object’s extensible flag

Question No. -

A linkage of series of prototype objects is called as ________
प्रोटोटाइप ऑब्जेक्ट की सीरीज़ के लिंकेज को ________ कहा जाता है

A. prototype stack

B. prototype chain

C. prototype class

D. prototypes

Question No. -

To determine whether one object is the prototype of (or is part of the prototype chain of) another object, one should use the ____________
यह निर्धारित करने के लिए कि क्या एक ऑब्जेक्ट किसी अन्य ऑब्जेक्ट का प्रोटोटाइप है (या प्रोटोटाइप चैन का हिस्सा है), किसी को _________ का यूज़ करना चाहिए

A. isPrototypeOf() method

B. equals() method

C. === operator

D. ==opertor

Question No. -

The purpose of extensible attribute is to __________
एक्स्टेंसिबल विशेषता का उद्देश्य __________ है

A. make all of the own properties of that object non configurable

B. to configure and bring a writable property

C. “lock down” objects into a known state and prevent outside
tampering

D. to include new properties into the object

Question No. -

The basic purpose of the toLocaleString() is to _________
toLocaleString() का मूल उद्देश्य _________ है

A. return a localised object representation

B. return a parsed string

C. return a local time in the string format

D. return a localized string representation of the object

Question No. -

The pop() method of the array does which of the following task?
ऐरे की पॉप () विधि निम्नलिखित में से कौन सा कार्य करती है?

A. decrements the total length by 1

B. increments the total length by 1

C. prints the first element but no effect on the length

D. updates the element

Question No. -

What will happen if reverse() and join() methods are used simultaneously?
क्या होगा यदि रिवर्स () और जॉइन () मेथड का एक साथ यूज़ किया जाता है?

A. Reverses and stores in the same array

B. Reverses and concatenates the elements of the array

C. Reverses

D. Stores the elements of an array in normal order

Question No. -

The primary purpose of the array map() function is that it __________
ऐरे मैप () फ़ंक्शन का प्राइमरी उद्देश्य यह है कि यह __________

A. maps the elements of another array into itself

B. passes each element of the array and returns the necessary mapped elements

C. passes each element of the array on which it is invoked to the function you
specify, and returns an array containing the values returned by that function

D. pass the elements of the array into another array

Question No. -

The reduce and reduceRight methods follow a common operation called __________
कम करने और कम करने के तरीके __________ नामक एक सामान्य ऑपरेशन का पालन करते हैं

A. filter and fold

B. inject and fold

C. finger and fold

D. fold

Question No. -

The method or operator used to identify the array is __________
ऐरे की पहचान करने के लिए यूज़ की जाने वाली विधि या ऑपरेटर __________ है

A. isarrayType()

B. ==

C. ===

D. typeof

Question No. -

Which of the following type of variable is visible everywhere in your JavaScript code?
आपके जावास्क्रिप्ट कोड में निम्न में से किस प्रकार का वैरिएबल हर जगह दिखाई देता है?

A. Global variable

B. Local variable

C. Both (a) and (b)

D. None of the above

Question No. -

The script tag must be placed in
स्क्रिप्ट टैग को इसमें रखा जाना चाहिए

A. Head

B. Head and body

C. Title and Head

D. All of the above

Question No. -

What is the correct syntax for referring to an external script called "abc.js"?
"abc.js" नामक एक्सटर्नल स्क्रिप्ट को रेफरिंग करने के लिए सही सिंटैक्स क्या है?

A. <script href=" abc.js">

B. <script scr="abc.js">

C. <script name="abc.js">

D. <script src=" abc.js">

Question No. -

Multiple declarations of variables are separated by which symbol.
वैरिएबल की एकाधिक घोषणाओं को किस सिंबल द्वारा अलग किया जाता है।

A. Semicolon

B. Colon

C. Comma

D. Asterisk

Question No. -

Which of the following is the correct syntax to display "enter password" in an alert box using JavaScript?
जावास्क्रिप्ट का यूज़ करते हुए अलर्ट बॉक्स में "पासवर्ड दर्ज करें" प्रदर्शित करने के लिए निम्नलिखित में से कौन सा सही सिंटैक्स है?

A. alertbox("enter password");

B. msg("enter password");

C. msgbox("enter password");

D. alert("enter password");

Question No. -

Which of these is not a logical operator?
ऑब्जेक्ट्स को एक ज्ञात स्थिति में "लॉक डाउन" करें और बाहरी छेड़छाड़ को रोकें

A. !

B. &

C. &&

D. ||

Question No. -

What is the correct syntax for referring to an external script called "xxx.js" ?
"xxx.js" नामक एक्सटर्नल स्क्रिप्ट को संदर्भित करने के लिए सही स्क्रिप्टक्या है

A. <script href="xxx.js">

B. <script src="xxx.js">

C. <script name="xxx.js">

D. <script id="xxx.js">

Question No. -

How do you write "Hello World" in an alert box ?
आप अलर्ट बॉक्स में ""Hello World" कैसे लिखते हैं?

A. alert("Hello World")

B. alertBox("Hello World")

C. msgBox("Hello World")

D. msg("Hello World")

Question No. -

Which of the following is a filter in Angular Js ?
निम्नलिखित में से कौन एंगुलर Js में फिल्टर है

A. Currency

B. Date

C. Uppercase

D. All of the above

Question No. -

Which of the following is true about AngularJS expressions?
निम्नलिखित में से कौन एंगुलरजेएस एक्सप्रेशन के बारे में सही है?

A. Expressions behave in same way as ng-bind directives

B. Expressions are used to bind application data to html

C. Expressions are written inside double braces like {{expression}}

D. All of these

Question No. -

Which of the following is not a mouse event ?
निम्नलिखित में से कौन एक माउस इवेंट नहीं है?

A. onclick

B. onmousescroller

C. onmouseover

D. onmousemove

Question No. -

Consider the below div tag content statement, how to print the value of "UserName"?


<div ng-app=" ng-init="firstName=John">
	<p>Input something in the input box:</p>
	<p>Name: sinput type="text" ng-model="UserName"></p>
	<p>You wrote: p>
<div>

A. UserName

B. {{UserName}}

C. {UsertName}

D. {_UserName)

Question No. -

Which is the correct syntax for Angular Module ?
एंगुलर मॉड्यूल के लिए सही सिंटैक्स कौन सा है?

A. var variable_name = angular.module("app_name", );

B. var variable_name =angular.modules("app_name");

C. var variable_name = angular.module();

D. var variable_name = new module();

Question No. -

Which is the correct syntax to call an external JavaScript file in the current HTML document ?
वर्तमान HTML दस्तावेज़ में बाहरी जावास्क्रिप्ट फ़ाइल को कॉल करने के लिए सही सिंटैक्स कौन सा है?

A. <script src=" test.js"'></script>

B. <script href=" test.js"></script>

C. <import src=" test.js"></import>

D. <script link=" test.js"></script>

Question No. -

Which of the following expressions is true ?
निम्नलिखित में से कौन सा एक्सप्रेशन सही है ?

A. {expression}

B. [{ expression }]

C. _expression

D. {{ expression }}

Question No. -

Which of the following code is most efficient?

Code 1

for(var number-10;number>=1;number-)
{
document.writeln(number);
}

Code 2

var number=10;
while(number>=1)
{
document.writeln(number);
number++
}

A. Code 1

B. Code 2

C. Both Code 1 and Code 2

D. Cannot Compare

Question No. -

What is a module in AngularJS ?
एंगुलरजेएस में मॉड्यूल क्या है?

A. expression

B. application

C. element

D. None of the above

Question No. -

Which statement specify correct difference between var and let keywords in JavaScript ?
कौन सा कथन जावास्क्रिप्ट में var और let कीवर्ड के बीच सही अंतर निर्दिष्ट करता है?

A. var defines a variable while let defines a constant.

B. There is no such major difference between them.

C. The value of a variable declared with var can be changed while the value of a
variable declared with let cannot be changed.

D. var defined function scoped variable while let define block scoped variable.

Question No. -

What will be the output of the following JavaScript code ?

<p id="demo"></p>
<script>
var js = 10;
js*=10;
document.getElementByld("demo").innerHTML = js;
</script>

A. 10

B. 15

C. 5

D. 50

Question No. -

Which one of the following is not considered as an error
निम्नलिखित में से किसे त्रुटि नहीं माना जाता है

A. Division by zero

B. Missing of Bracket

C. Syntax error

D. Missing of semicolons

Question No. -

The correct syntax to write "Sky is blue" in JavaScript is
जावास्क्रिप्ट में "Sky is blue" लिखने का सही सिंटैक्स है

A. jscript.write("Sky is blue")

B. document.write("Sky is blue")

C. print("Sky is blue")

D. jscript.print("Sky is blue")

Question No. -

What type of value gets printed if we add the following two variables ?

var a = "10";
var b =50;

A. Long

B. Text

C. Integer

D. Number

Question No. -

Which of the following statements define Arrays in JavaScript?
निम्नलिखित में से कौन सा कथन जावास्क्रिप्ट में ऐरे को परिभाषित करता है?

A. t is an ordered list of values

B. It is an ordered list of objects

C. It is an ordered list of string

D. It is an ordered list of functions

Question No. -

For which of the following purpose(s) JavaScript is designed for ?
निम्नलिखित में से किस उद्देश्य (उद्देश्यों) के लिए जावास्क्रिप्ट को डिज़ाइन किया गया है?

A. To style HTML Pages

B. To perform server-side scripting operation

C. To execute query related to DB on server

D. To add interactivity to HTML Pages

Question No. -

What is the output of the following JavaScript code?

<script>
var a;
document.getElementByld("demo").innerHTML = a+1;
</script>

A. 0

B. undefined

C. 1

D. NaN

Question No. -

if program is a DOM object for a paragraph, which of the following is a correct syntax to change the text in the paragraph?
यदि प्रोग्राम एक पैराग्राफ के लिए एक डोम ऑब्जेक्ट है, तो पैराग्राफ में टेक्स्ट को बदलने के लिए निम्नलिखित में से कौन सा सही सिंटैक्स है?

A. params.value = "Updated Text;

B. params.content="Updated Text"

C. params.nodeValue = "Updated Text";

D. params.firstChlid.nodeValue = "Updated Text";

Question No. -

Which of the following directives allows one to use form ?
निम्नलिखित में से कौन सा निर्देश किसी को फॉर्म का उपयोग करने की अनुमति देता है?

A. ng-app

B. ng-form

C. ng-controller

D. ng-bind

Question No. -

AngularJS is a
एंगुलरजेएस क्या है

A. HTML Framework

B. .Net Framework

C. JavaScript framework

D. Oracle Framework

Question No. -

Identify the invalid HTML event
इनवैलिड HTML ईवेंट की पहचान करें

A. unload

B. load

C. onmouseout

D. onmouseover

Question No. -

Which comparison operator is used to find equality of type as well as content between two variables?
किस कंपैरिजन ऑपरेटर का उपयोग दो वेरिएबल के बीच समानता के साथ-साथ कंटेंट को खोजने के लिए किया जाता है?

A. ==

B. ===

C. ====

D. None of the above

Question No. -

What is not a valid statement for Angular JS?
इनमे से कौन सा कथन एंगुलर JS के लिए मान्य नहीं है?

A. It is a JavaScript framework

B. It is added using <script> tag

C. It is a framework written in C

D. Angular JS extends HTML attributes

Question No. -

Exponential operator in JavaScript is:
जावास्क्रिप्ट में एक्सपोनेंसिअल ऑपरेटर____ है:

A. ^

B. %

C. **

D. None of the above

Question No. -

An element can be accessed in Java Script using:
जावास्क्रिप्ट में एक एलिमेंट को _______का उपयोग करके एक्सेस किया जा सकता है

A. getElementsByName

B. ElementsByld

C. getElementsByClassName

D. All of the above

Question No. -

Directive to initialize Angular JS application
एंगुलर जेएस(JS) एप्लिकेशन को इनिशियलाइज़ करने का निर्देश_________|

A. ng-app

B. ng-init

C. ng-model

D. none of the above

Question No. -

What is the role of JavaScript in web design?
वेब डिज़ाइन में जावास्क्रिप्ट की क्या भूमिका है?

A. define the content of webpages

B. specify the layout of webpages

C. program the behavior of webpages

D. none of the above

Question No. -

Identify the invalid statement about Angular JS Expressions
एंगुलर JS एक्सप्रेशंस के बारे में अमान्य कथन को पहचानें करे |

A. written inside doublebr braces: {{expression }}

B. written inside a directive: ng-bind="expression "

C. return the result exactly where the expression is written

D. Angular JS expressions are different from JavaScript expressions

Question No. -

What is not true about ng-repeat directive in Angular JS?
एंगुलर JS में ng-repeat directive के बारे में क्या सही नहीं है

A. repeats an HTML element

B. clones HTML elements once for each item in a collection

C. used on an arry of objects

D. defines initial values for an Angular JS application

Question No. -

Which operator is used to get datatype of a variable in JavaScrip
JavaScrip में एक वैरिएअब का डेटाटाइप प्राप्त करने के लिए किस ऑपरेटर का उपयोग किया जाता है

A. instanceof

B. gettype

C. typeof

D. none of the above

Question No. -

Which keyword is a must to use when JavaScript code is to run in older browser?
जावास्क्रिप्ट कोड को पुराने ब्राउजर में चलाने के लिए किस कीवर्ड का उपयोग करना आवश्यक है?

A. var

B. let

C. const

D. none of the above

Question No. -

Variables in JavaScript cannot be declared using:
जावास्क्रिप्ट में वेरिएबल को _____________का प्रयोग करके घोषित नहीं किया जा सकता|

A. var

B. let

C. nothing

D. set

Question No. -

Which class property makes an image transparent ?
कौन सी क्लास प्रॉपटी इमेज को ट्रांस पैर्रेंट बनाती है?

A. w3-opacity

B. w3-trans

C. w3-grayscale

D. None of the above

Question No. -

Which JavaScript statement is used to perform different actions based on different conditions?
विभिन्न स्थितियों के आधार पर विभिन्न क्रियाओ को करने के लिए किस जावास्क्रिप्ट स्टेटमेंट का उपयोग किया जाता है?

A. if

B. for

C. while

D. switch

Question No. -

Which of the following can be used as a prefix for Directives ?
निम्नलिखित में से किसका प्रयोग निर्देशों (Directives)के उपसर्ग (prefix)के रूप में किया जा सकता है?

A. data

B. ng-

C. Both (A) and (B)

D. None of the above

Question No. -

JavaScript can change?
जावास्क्रिप्ट _______को बदल सकता है?

A. HTML Conternt

B. HTML Attribute Values

C. HTML Styles

D. AIl of the above

Question No. -

Which statement is used to come out switch block?
स्विच ब्लॉक से बहार आने के लिए किस स्टेटमेंट का प्रयोग किया जाता है ?

A. exit

B. break

C. default

D. out

Question No. -

JavaScript was invented by _____
जावास्क्रिप्ट का आविष्कार _____ द्वारा किया गया था।

A. HelSinki Linus

B. W3 Group

C. Brendan Eich

D. James Gossling

Question No. -

Variable can hold ____ value at a time.
वेरिएबिल एक समय वैल्यू होल्ड कर सकता है।

A. Muliple

B. Single

C. None of these

D. Double

Question No. -

The extension of JavaScript file is
जावास्क्रिप्ट फाईल का एक्सटेंसन है।

A. .html

B. .ajs

C. .js

D. .css

Question No. -

Integer variable is declared using following syntax in Js.
जावास्क्रिप्ट में निम्नलिखित सिन्टैक्स का उपयोग करके इंटीजर वेरिएबल डिक्लेयर्ड होता है।

A. int num;

B. integer num;

C. Integer nums;

D. var num;

Question No. -

JavaScript was originally developed under the name ______ .
जावास्क्रिप्ट मूल रूप से _____ नाम के तहत विकसित किया गया था।

A. ActionScript

B. Sencha

C. Oak

D. Mocha

Question No. -

Which was the first browser to support JavaScript?
जावास्क्रिप्ट को सपोर्ट करने वाला पहला ब्राउजर कौन सा था ?

A. IE

B. NetScape

C. Google Chrome

D. Mozilla Firefox

Question No. -

Which of the following Attribute is used to include External JS code inside your HTML Document -
एचटीएमएल डॉक्यूमेंट के अंदर बाहरी जेएस कोड को शामिल करने के लिए निम्नलिखित में से किस ऐट्रीब्यूट का उपयोग किया जाता है-

A. Script

B. src

C. Link

D. Rel

Question No. -

JavaScript is designed for following purpose-
जावास्क्रिप्ट को निम्नलिखित उद्देश्य के लिए डिज़ाइन किया गया है-

A. To execute Query related to DB on server.

B. To style HTMLpages.

C. To Add Interactivity to HTML pages.

D. To perform server side scripting operation.

Question No. -

JavaScript Code can be called by using

A. RMI

B. Triggering Event

C. Preprocessor

D. Function/Method

Question No. -

The type of a variable that is volatile is

A. Volatile variable

B. Mutable variable

C. Immutable variable

D. Dynamic variable

Question No. -

A hexadecimal literal begins with

A. 00

B. 0x

C. 0X

D. Both 0x and 0X

Question No. -

When there is an indefinite or an infinity value during an arithmetic value computation, javascript

A. Prints an exception error

B. Prints an overflow error

C. Displays “Infinity”

D. Prints the value as such

Question No. -

Which of the following is not considered as an error in JavaScript?

A. Syntax error

B. Missing of semicolons

C. Division by zero

D. None of these

Question No. -

The snippet that has to be used to check if “a” is not equal to “null” is

A. if(a!=null)

B. if (!a)

C. if(a!null)

D. if(a!==null)

Question No. -

The statement a===b refers to
कथन a===b संदर्भित करता है

A. Both a and b are equal in value, type and reference address

B. Both a and b are equal in value

C. Both a and b are equal in value and type

D. None of these

Question No. -

The function definitions in JavaScript begins with

A. Identifier and Parantheses

B. Return type and Identifier

C. Return type, Function keyword, Identifier and Parantheses

D. Identifier and Return type

Question No. -

When does the function name become optional in JavaScript?

A. When the function is defined as a looping statement

B. When the function is defined as expressions

C. When the function is predefined

D. All of the above

Question No. -

Which of the following javascript functions are used to convert nonnumeric values into numbers?
निम्नलिखित में से कौन सा जावास्क्रिप्ट फ़ंक्शन गैर-संख्यात्मक मानों को संख्याओं में परिवर्तित करने के लिए उपयोग किया जाता है?

A. Number()

B. parseFloat()

C. parseInt()

D. All of the above

Question No. -

What is the correct JavaScript syntax to write "Hello World"?

A. System.out.println("Hello World")

B. println ("Hello World")

C. document.write("Hello World")

D. response.write("Hello World")

Question No. -

Javascript is _____ language
जावास्क्रिप्ट _____ भाषा है

A. Client Side

B. Server Side

C. Both A and B

D. None of These

Question No. -

How to find out the index of a particular character on a string

A. position()

B. index()

C. indexOf()

D. None of These

Question No. -

JavaScript is designed for following purpose

A. To Perform Server Side Scripting Opertion

B. To Execute Query Related to DB on Server

C. To add interactivity to HTML Pages

D. To Style HTML Pages

Question No. -

Which of the following is not a JavaScript datatype?
निम्न में से कौन सा जावास्क्रिप्ट डेटाटाइप नहीं है?

A. Boolean

B. String

C. Number

D. Function

Question No. -

What is the output of this expression? x = 2 + "2"; document.write(x);

A. 22

B. 4

C. 2

D. syntax error

Question No. -

Which of the following is not a valid JavaScript variable name?

A. 5myvalue

B. myvalue5

C. Myvalue

D. None of These

Question No. -

What is the alternate name for Java script?

A. LimeScript

B. ECMScript

C. Coffee Script

D. ECMAScript

Question No. -

Inside which HTML element do we put the JavaScript?

A. <javascript>

B. <script>

C. <scripting>

D. <link>

Question No. -

What is the correct syntax for referring to an external script called "data.js"?

A. <script name="data.js">

B. <script href="data.js">

C. <script src="data.js">

D. <link href="data.js">

Question No. -

How do you write "Hello World" in an alert box?

A. alert("Hello World");

B. msgBox("Hello World");

C. alertBox("Hello World");

D. msg("Hello World");

Question No. -

How do you create a function in JavaScript?

A. function:myFunction()

B. function myFunction()

C. function = myFunction()

D. function.myFunction()

Question No. -

How to write an IF statement in JavaScript?

A. if (i == 5)

B. if i == 5 then

C. if i = 5

D. if i = 5 then

Question No. -

How to write an IF statement for executing some code if "i" is NOT equal to 5?

A. if (i <> 5)

B. if (i != 5)

C. if i =! 5 then

D. if i <> 5

Question No. -

How can you add a comment in a JavaScript?

A.

B. //This is a comment

C. 'This is a comment

D. #This is a comment

Question No. -

What is the correct way to write a JavaScript array?

A. var colors = 1 = ("red"), 2 = ("green"), 3 =
("blue")

B. var colors = (1:"red", 2:"green", 3:"blue")

C. var colors = "red", "green", "blue"

D. var colors = ["red", "green", "blue"]

Question No. -

How do you round the number 7.25, to the nearest integer?

A. round(7.25)

B. Math.rnd(7.25)

C. rnd(7.25)

D. Math.round(7.25)

Question No. -

How do you find the number with the highest value of x and y?

A. ceil(x, y)

B. Math.max(x, y)

C. top(x, y)

D. Math.ceil(x, y)

Question No. -

How do you declare a JavaScript variable?

A. variable carName;

B. var carName;

C. vari carName;

D. dim carName;

Question No. -

Which operator is used to assign a value to a variable?

A. =

B. x

C. ==

D. *

Question No. -

Find the only statement in the following that is correct.
निम्नलिखित में से केवल वही कथन ज्ञात कीजिए जो सही है।

A. JavaScript interpreter processes programs written in Java.

B. JavaScript interpreter processes commands in a script written in JavaScript.

C. Java and JavaScript are almost similar

D. JavaScript cannot be embedded in HTML.

Question No. -

Which of the following achieves the effect of using script language?
निम्नलिखित में से कौन लिपि भाषा के प्रयोग के प्रभाव को प्राप्त करता है?

A. DHTML

B. XML

C. HTML

D. CGI

Question No. -

What is JavaScript?
जावास्क्रिप्ट क्या है?

A. JavaScript is a scripting language used to make the website interactive

B. JavaScript is an assembly language used to make the website interactive

C. JavaScript is a compiled language used to make the website interactive

D. None of the mentioned

Question No. -

Which of the following is correct about JavaScript?
निम्नलिखित में से कौन जावास्क्रिप्ट के बारे में सही है?

A. JavaScript is an Object-Based language

B. JavaScript is Assembly-language

C. JavaScript is an Object-Oriented language

D. JavaScript is a Low-level language

Question No. -

Among the given statements, which statement defines closures in JavaScript?
दिए गए कथनों में से कौन सा कथन जावास्क्रिप्ट में क्लोजर को परिभाषित करता है?

A. JavaScript is a function that is enclosed with references to its inner function
scope

B. JavaScript is a function that is enclosed with references to its lexical
environment

C. JavaScript is a function that is enclosed with the object to its inner function
scope

D. None of the mentioned

Question No. -

Arrays in JavaScript are defined by which of the following statements?
जावास्क्रिप्ट में Arrays को निम्नलिखित में से किस कथन द्वारा परिभाषित किया जाता है?

A. It is an ordered list of values

B. It is an ordered list of objects

C. It is an ordered list of string

D. It is an ordered list of functions

Question No. -

Which of the following is not javascript data types?
निम्नलिखित में से कौन जावास्क्रिप्ट डेटा प्रकार नहीं है?

A. Null type

B. Undefined type

C. Number type

D. All of the mentioned

Question No. -

Where is Client-side JavaScript code is embedded within HTML documents?
क्लाइंट-साइड जावास्क्रिप्ट कोड HTML दस्तावेज़ों में कहाँ एम्बेड किया गया है?

A. A URL that uses the special javascript:code

B. A URL that uses the special javascript:protocol

C. A URL that uses the special javascript:encoding

D. A URL that uses the special javascript:stack

Question No. -

Which of the following object is the main entry point to all client-side JavaScript features and APIs?
निम्नलिखित में से कौन सी वस्तु सभी क्लाइंट-साइड जावास्क्रिप्ट सुविधाओं और एपीआई का मुख्य प्रवेश बिंदु है?

A. Position

B. Window

C. Standard

D. Location

Question No. -

Which of the following can be used to call a JavaScript Code Snippet?
जावास्क्रिप्ट कोड स्निपेट को कॉल करने के लिए निम्नलिखित में से किसका उपयोग किया जा सकता है?

A. Function/Method

B. Preprocessor

C. Triggering Event

D. RMI

Question No. -

Which of the following explains correctly what happens when a JavaScript program is developed on a Unix Machine?
निम्नलिखित में से कौन सही ढंग से बताता है कि जब एक यूनिक्स मशीन पर एक जावास्क्रिप्ट प्रोग्राम विकसित किया जाता है तो क्या होता है?

A. will work perfectly well on a Windows Machine

B. will be displayed as JavaScript text on the browser

C. will throw errors and exceptions

D. must be restricted to a Unix Machine only

Question No. -

Which of the following scoping type does JavaScript use?
निम्नलिखित में से कौन सा स्कोपिंग प्रकार जावास्क्रिप्ट का उपयोग करता है?

A. Sequential

B. Segmental

C. Lexical

D. Literal

Question No. -

What is the basic difference between JavaScript and Java?
जावास्क्रिप्ट और जावा के बीच बुनियादी अंतर क्या है?

A. Functions are considered as fields

B. Functions are values, and there is no hard distinction between methods and
fields

C. Variables are specific

D. There is no difference

Question No. -

Why JavaScript Engine is needed?
जावास्क्रिप्ट इंजन की आवश्यकता क्यों है?

A. Both Compiling & Interpreting the JavaScript

B. Parsing the javascript

C. Interpreting the JavaScript

D. Compiling the JavaScript

Question No. -

Why event handlers is needed in JS?
जेएस में इवेंट हैंडलर की आवश्यकता क्यों है?

A. Allows JavaScript code to alter the behaviour of windows

B. Adds innerHTML page to the code

C. Change the server location

D. Performs handling of exceptions and occurrences

Question No. -

Which of the following is not a framework?
निम्नलिखित में से कौन सा फ़्रेमवर्क नहीं है?

A. JavaScript .NET

B. JavaScript

C. Cocoa JS

D. jQuery

Question No. -

Which of the following is the property that is triggered in response to JS errors?
निम्नलिखित में से कौन सी संपत्ति जेएस त्रुटियों के जवाब में ट्रिगर होती है?

A. onclick

B. onerror

C. onmessage

D. onexception

Question No. -

Which of the following statement is true for AngularJS?
निम्नलिखित में से कौन सा कथन एंगुलरजेएस के लिए सही है?

A. AngularJS is a closed-source front-end web framework

B. AngularJS is an open-source front-end web framework

C. AngularJS is an open-source backend web framework

D. AngularJS is a closed-source back-end web framework

Question No. -

Which of the following is the correct syntax for writing AngularJS expressions ?
निम्नलिखित में से कौन एंगुलरजेएस एक्सप्रेशन लिखने के लिए सही सिंटैक्स है?

A. {{expression}}

B. {{expression | filter1 | filter2 | …}}

C. Both of the mentioned

D. None of the mentioned

Question No. -

Which of the following components can be injected as a dependency in AngularJS?
निम्नलिखित में से कौन सा घटक AngularJS में निर्भरता के रूप में इंजेक्ट किया जा सकता है?

A. factory

B. service

C. value

D. All of the above

Question No. -

Which of the following directives is used to start an angularJS application?
निम्न में से कौन सा निर्देश angularJS एप्लिकेशन शुरू करने के लिए उपयोग किया जाता है?

A. ng-repeat

B. ng-init

C. ng-app

D. ng-model

Question No. -

AngularJS expressions bind AngularJS data to HTML like which of the following directive?
एंगुलरजेएस एक्सप्रेशन एंगुलरजेएस डेटा को एचटीएमएल से बांधता है, जैसे निम्न में से कौन सा निर्देश?

A. ng-repeat

B. ng-bind

C. ng-app

D. ng-model

Question No. -

Which of the following can be used as a prefix for Directive?
निम्‍नलिखित में से किसका प्रयोग निर्देश के उपसर्ग के रूप में किया जा सकता है?

A. data-

B. ng-

C. All of the mentioned

D. None of the mentioned

Question No. -

What is a Model in MVC?
एमवीसी में एक मॉडल क्या है?

A. the lowest level of the pattern responsible for maintaining data

B. represents server-side data

C. represents data stored in a database

D. None of the mentioned

Question No. -

Which of the following statement is correct about data binding in AngularJS?
निम्नलिखित में से कौन सा कथन AngularJS में डेटा बाइंडिंग के बारे में सही है?

A. Automatic synchronization of data between model and view components

B. Automatic synchronization of data between model and controller components

C. Technique to save html data in the database

D. Technique to bind database data to html control

Question No. -

Which of the following is an advantage of AngularJS?
निम्नलिखित में से कौन एंगुलरजेएस का एक फायदा है?

A. Uses dependency injection and makes use of separation of concerns

B. Code is unit-testable

C. Provides reusable components

D. All of the mentioned

Question No. -

What is React.js?
React.js क्या है?

A. Open-source JavaScript back-end library

B. JavaScript front-end library to create a database

C. Free and open-source JavaScript front-end library

D. None of the mentioned

Question No. -

Which of the following acts as the input of a class-based component?
निम्नलिखित में से कौन वर्ग- बेस्ड कॉम्पोनेन्ट के इनपुट के रूप में कार्य करता है?

A. Class

B. Props

C. Factory

D. None of the mentioned

Question No. -

React.js is written in which of the following language?
React.js निम्नलिखित में से किस भाषा में लिखा गया है?

A. C

B. C++

C. JavaScript

D. Java

Question No. -

How many elements can a valid react component return?
एक वैलिड प्रतिक्रिया कॉम्पोनेन्ट कितने एलिमेंट्स वापस कर सकता है?

A. React doesn’t return element

B. 1 Element

C. More than 1 element

D. None of the mentioned

O Level Web Designing Chapter-6 2024 Most Important Practice MCQ | WD O Level MCQs

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