Javascript MCQs - CSE MCQs Questions and Answers

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The basic difference between JavaScript and Java is

There is no difference

Functions are considered as fields

Variables are specific

functions are values, and there is no hard distinction between methods and fields

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When a class B can extend another class A, we say that

A is the superclass and B is the subclass

B is the superclass and A is the subclass

Both A and B are the superclass

Both A and B are the subclass

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Consider the following code snippet

console.log(p)

If p is not defined, what would be the result or type of error?

Zero

Null

ReferenceError

ValueNotFoundError

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Why was "The Good Parts designed as a language subset in JavaScript?

To improve programmer flexibility

To balance the work load of the programmer

To create an in-built compiler and interpreter

To improve programmer productivity

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Which are the two functions that are not allowed in any secure subset?

evaluate() and restrict()

eval() and the Function() constructor

debugger() and test()

eval() and debugger()

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To define each of the set classes as a property of the sets object (namespace) for the module, the statement is

sets = sets.AbstractEnumerableSet.extend();

sets.SingletonSet = sets.AbstractEnumerableSet.extend(...);

sets.SingletonSet = sets.extend(...);

sets = sets.extend(...);

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Consider the following statement containing regular expressions

var text = "testing: 1, 2, 3";

var pattern = /\d+/g;

In order to check if the pattern matches, the statement is

text==pattern

text.equals(pattern)

pattern.test(text)

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What will be the reaction when a catch clause has no conditionals ?

Takes it to be 0

Takes it to be 1

Takes it to be true

Takes it to be false