JavaScript Mcqs Test Online

Q: How can I prepare for JavaScript Mcqs Test Online?

You can prepare for JavaScript Mcqs Test Online by attempting the free online quizzes at Gotest.com.pk. We provide instant results, performance reports, and detailed explanations for every question.

Question 1

1. What is the code to be used to trim whitespaces ?

Answer

let trimmed = (trim(l));

Answer

let trimmed = (l.trim() for (l in lines));

Answer

let trimmed = for(l in lines));

Answer

let trimmed = l.trim();

Question 2

2. Why so JavaScript and Java have similar name?

Answer

They both originated on the island of Java

Answer

JavaScript is a stripped-down version of Java

Answer

None of the above

Answer

JavaScript's syntax is loosely based on Java's

Question 3

3. The __ operator determines whether an object is an instance of another object?

Answer

instanceof

Question 4

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

Answer

None of the above

Question 5

5. __________ JavaScript is also called server-side JavaScript?

Question 6

6. Which of the following attribute can hold the JavaScript version?

Answer

None of the above

Question 7

7. Which of the following are capabilities of functions in JavaScript?

Answer

Accept parameters

Answer

None of the above

Answer

Return a value

Answer

Accept parameters and Return a value

Question 8

8. JavaScript variables are case-sensitive?

Question 9

9. The __ operator determines the type of a given object?

Answer

instanceof

Question 10

10. Consider the following code snippet

let succ = function(x) x+1, yes = function() true, no = function() false;

What convenience does the above code snippet provide?

Answer

Modular behaviour

Answer

No convenience

Answer

Functional behaviour

Answer

Shorthand expression

Question 11

11. What should appear at the very end of your JavaScript?
The <script LANGUAGE="JavaScript">tag

Answer

The END statement

Question 12

12. _____ JavaScript statements embedded in an HTML page can respond to user events such as mouse-clicks, form input, and page navigation?

Answer

Client-side

Answer

Server-side

Question 13

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

Answer

Syntax Error

Question 14

14. ______ JavaScript is also called client-side JavaScript?

Question 15

15. ______ tag is an extension to HTML that can enclose any number of JavaScript statements?

Answer

Study Plan for JavaScript Mcqs Test Online

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Total Questions:	25
Time Allowed:	10 Minutes
Total Marks:	25
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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JavaScript Mcqs Test Online