JavaScript MCQ Questions with answers and solutions Page 19

Q. Why is JavaScript called a structured programming language?

(A) Because all popular web browsers support JavaScript as they provide built-in execution environments
(B) Because it is an object-oriented programming language that uses prototypes rather than using classes for inheritance
(C) Because it follows the syntax and structure of the C programming language, which is a structured programming language
(D) Because it ignores spaces, tabs, and newlines that appear in JavaScript programs

✅ Correct Answer: (C) Because it follows the syntax and structure of the C programming language, which is a structured programming language

Published by Mr. Dubey ⭐ 111.42K Points at 12-Jun-2022 08:13 am in JavaScript

Q. Which of the following is the correct syntax to print a page using JavaScript?

(A) print();
(B) window.print();
(C) document.print();
(D) echo

💬 Discuss

✅ Correct Answer: (B) window.print();

Published by Mr. Dubey ⭐ 111.42K Points at 12-Jun-2022 08:14 am in JavaScript

Q. Which of the following is not a JavaScript Data Types?

(A) Boolean
(B) Undefined
(C) Number
(D) Float

💬 Discuss

✅ Correct Answer: (D) Float

Published by Mr. Dubey ⭐ 111.42K Points at 12-Jun-2022 08:14 am in JavaScript

Q. Which of the following is the correct JavaScript syntax to access the element using HTML code?

(A) getElement ("availablecourse").innerHTML = "See the list of availablecourse";
(B) getElementById ("availablecourse").innerHTML = "See the list of availablecourse";
(C) getId ("availablecourse") = "See the list of availablecourse";
(D) document.getElementById ("availablecourse").innerHTML = See the list of availablecourse;

💬 Discuss

✅ Correct Answer: (D) document.getElementById ("availablecourse").innerHTML = See the list of availablecourse;

Published by Mr. Dubey ⭐ 111.42K Points at 12-Jun-2022 08:15 am in JavaScript

Q. Which of the following function of the Array object is used to add one or more elements to the front of an array and returns the new length of the array?

(A) splice()
(B) unshift()
(C) sort()
(D) toString()

💬 Discuss

✅ Correct Answer: (B) unshift()

Published by Mr. Dubey ⭐ 111.42K Points at 12-Jun-2022 08:16 am in JavaScript

Q. Which of the following syntax is correct to refer to an external script called "LFC.js"?

(A) <script source="LFC.js">
(B) <script ref="LFC.js">
(C) <script src="LFC.js">
(D) <script type="LFC.js">

💬 Discuss

✅ Correct Answer: (C) <script src="LFC.js">

Published by Mr. Dubey ⭐ 111.42K Points at 12-Jun-2022 08:16 am in JavaScript

Q. Which of the following syntax can be used to write "Hello World" in an alert box?

(A) alertBox("Hello World");
(B) msgBox("Hello World");
(C) alert("Hello World");
(D) msg("Hello World");

💬 Discuss

✅ Correct Answer: (C) alert("Hello World");

Published by Mr. Dubey ⭐ 111.42K Points at 12-Jun-2022 08:17 am in JavaScript

Q. Which of the following is not a JavaScript framework or library?

(A) Polymer
(B) Meteor
(C) jQuery
(D) Cassandra

💬 Discuss

✅ Correct Answer: (D) Cassandra

Published by Mr. Dubey ⭐ 111.42K Points at 12-Jun-2022 08:17 am in JavaScript

Q. Why does the name of JavaScript and Java are similar?

(A) JavaScript is a stripped-down version of Java.
(B) The syntax of JavaScript is loosely based on the syntax of Java.
(C) JavaScript and Java both are originated on the island of Java.
(D) None of the above

💬 Discuss

✅ Correct Answer: (B) The syntax of JavaScript is loosely based on the syntax of Java.

Published by Mr. Dubey ⭐ 111.42K Points at 12-Jun-2022 08:18 am in JavaScript

Q. Which of the following is the correct statement of WHILE loop start?

(A) while (i <= 10)
(B) while (i <= 10; i++)
(C) while i = 1 to 10
(D) None of These

💬 Discuss

✅ Correct Answer: (A) while (i <= 10)

Published by Mr. Dubey ⭐ 111.42K Points at 12-Jun-2022 08:18 am in JavaScript

JavaScript MCQs with answers Page - 19

Q. Why is JavaScript called a structured programming language?

Q. Which of the following is the correct syntax to print a page using JavaScript?

Q. Which of the following is not a JavaScript Data Types?

Q. Which of the following is the correct JavaScript syntax to access the element using HTML code?

Q. Which of the following function of the Array object is used to add one or more elements to the front of an array and returns the new length of the array?

Q. Which of the following syntax is correct to refer to an external script called "LFC.js"?

Q. Which of the following syntax can be used to write "Hello World" in an alert box?

Q. Which of the following is not a JavaScript framework or library?

Q. Why does the name of JavaScript and Java are similar?

Q. Which of the following is the correct statement of WHILE loop start?

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