Explore topic-wise MCQs in Javascript.

This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Javascript knowledge and support exam preparation. Choose a topic below to get started.

1.

WHICH_OF_THE_OPERATOR_IS_USED_TO_TEST_IF_A_PARTICULAR_PROPERTY_EXISTS_OR_NOT??$

A. in
B. exist
C. within
D. exists
Answer» D. exists
Discussion
2.

Among_the_following,_which_one_is_a_ternary_operator?$

A. +
B. :
C. –
D. ?:
Answer» B. :
Discussion
3.

What kind of an expression is “new Point(2,3)”?#

A. Primary Expression
B. Object Creation Expression
C. Invocation Expression
D. Constructor Calling Expression
Answer» E.
Discussion
4.

The expression of calling ( or executing ) a function or method in JavaScript is called ________

A. Primary expression
B. Functional expression
C. Invocation expression
D. Property Access Expression
Answer» B. Functional expression
Discussion
5.

The property of a primary expression is ____________

A. stand-alone expressions
B. basic expressions containing all necessary functions
C. contains variable references alone
D. contains only keywords
Answer» E.
Discussion
6.

A function definition expression can be called as __________

A. Function prototype
B. Function literal
C. Function calling
D. Function declaration
Answer» B. Function literal
Discussion
7.

123246

A. 246
B. 123123
C. Exception
Answer» C. Exception
Discussion