MCQ : JAVSCRIPT AND ANGULAR JS For NIELIT O Level Exam

JAVSCRIPT AND ANGULAR JS For NIELIT O Level Exam

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Question No# : 01 out of 50 Report Bug Bookmark

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# : 02 out of 50 Report Bug Bookmark

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# : 03 out of 50 Report Bug Bookmark

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# : 04 out of 50 Report Bug Bookmark

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# : 05 out of 50 Report Bug Bookmark

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# : 06 out of 50 Report Bug Bookmark

Why is a JavaScript engine 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# : 07 out of 50 Report Bug Bookmark

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# : 08 out of 50 Report Bug Bookmark

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

Question No# : 09 out of 50 Report Bug Bookmark

Which operator is used to get the data type of a variable in JavaScript?
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# : 10 out of 50 Report Bug Bookmark

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# : 11 out of 50 Report Bug Bookmark

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# : 12 out of 50 Report Bug Bookmark

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# : 13 out of 50 Report Bug Bookmark

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# : 14 out of 50 Report Bug Bookmark

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# : 15 out of 50 Report Bug Bookmark

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# : 16 out of 50 Report Bug Bookmark

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# : 17 out of 50 Report Bug Bookmark

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# : 18 out of 50 Report Bug Bookmark

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# : 19 out of 50 Report Bug Bookmark

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# : 20 out of 50 Report Bug Bookmark

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# : 21 out of 50 Report Bug Bookmark

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# : 22 out of 50 Report Bug Bookmark

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# : 23 out of 50 Report Bug Bookmark

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# : 24 out of 50 Report Bug Bookmark

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# : 25 out of 50 Report Bug Bookmark

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# : 26 out of 50 Report Bug Bookmark

What is JavaScript?
जावास्क्रिप्ट क्या है?

A. A markup language

B. A programming language

C. A database

D. A server

Question No# : 27 out of 50 Report Bug Bookmark

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# : 28 out of 50 Report Bug Bookmark

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# : 29 out of 50 Report Bug Bookmark

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# : 30 out of 50 Report Bug Bookmark

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# : 31 out of 50 Report Bug Bookmark

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# : 32 out of 50 Report Bug Bookmark

Angular js is a type of open source framework for
Angular js एक प्रकार का ओपन सोर्स फ्रेमवर्क है

A. Front end

B. Back end

C. Full end

D. All of above

Question No# : 33 out of 50 Report Bug Bookmark

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# : 34 out of 50 Report Bug Bookmark

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# : 35 out of 50 Report Bug Bookmark

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# : 36 out of 50 Report Bug Bookmark

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# : 37 out of 50 Report Bug Bookmark

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# : 38 out of 50 Report Bug Bookmark

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# : 39 out of 50 Report Bug Bookmark

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# : 40 out of 50 Report Bug Bookmark

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# : 41 out of 50 Report Bug Bookmark

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# : 42 out of 50 Report Bug Bookmark

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# : 43 out of 50 Report Bug Bookmark

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# : 44 out of 50 Report Bug Bookmark

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# : 45 out of 50 Report Bug Bookmark

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# : 46 out of 50 Report Bug Bookmark

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# : 47 out of 50 Report Bug Bookmark

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# : 48 out of 50 Report Bug Bookmark

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# : 49 out of 50 Report Bug Bookmark

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# : 50 out of 50 Report Bug Bookmark

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