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Welcome to the Classes and Modules MCQs Page

Dive deep into the fascinating world of Classes and Modules with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Classes and Modules, a crucial aspect of JavaScript. In this section, you will encounter a diverse range of MCQs that cover various aspects of Classes and Modules, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within JavaScript.

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Check out the MCQs below to embark on an enriching journey through Classes and Modules. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of JavaScript.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Classes and Modules. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Classes and Modules MCQs | Page 6 of 7

Discuss
Answer: (b).let is confined to a particular function but var is not
Q52.
Consider the following code snippet. What would be the output if oddsums(5); is executed afted the below code snippet ?
function oddsums(n) 
{
     let total = 0, result=[]; 
     for(let x = 1; x <= n; x++) 
     { 
        let odd = 2*x-1; 
        total += odd;
        result.push(total);
     }
     return result;
}
Discuss
Answer: (a).Returns [1,4,9,16,25]
Q53.
Consider the following code snippet:

console.log(p)

If p is not defined, what would be the result or type of error?
Discuss
Answer: (c).ReferenceError
Q54.
Consider the following code snippet:

let x=x+1;
console.log(x);

What will be the result for the above code snippet?
Discuss
Answer: (d).NaN
Q55.
Consider the following code snippet:

[x,y]=[y,x];

What is the result of the above code snippet?
Discuss
Answer: (c).Flashes an error
Q56.
Which looping statement allows XML tags to appear in JavaScript programs and adds API for operating on XML data?
Discuss
Answer: (c).for/each loop
Q57.
Which exception does the Iterators throw from their next() method when there are no more values to iterate, that work on finite collections ?
Discuss
Answer: (d).StopIteration
Q58.
Which method of the iterable object returns an iterator object for the collection?
Discuss
Answer: (b)._iterator_()
Q59.
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?
Discuss
Answer: (a).Functional behaviour
Q60.
Consider the following code snippet:

data.sort(function(a,b),b-a);

What does the above code do?
Discuss
Answer: (d).Sort in reverse numerical order
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