Answer & Solution
Answer: Option B
Solution:
In JavaScript, the + operator concatenates strings. Since one operand is a string, the number is converted to a string, resulting in '55'.
Q
What is the result of the expression 5 + '5'?
Related Questions on Average
Which operator is used to assign a value to a variable in JavaScript?
A). =
B). ==
C). ===
D). =>
What is the result of the expression 3 * '3'?
A). 9
B). 9
C). 33
D). NaN
What is the result of 10 % 3 in JavaScript?
A). 0
B). 1
C). 2
D). 3
What does typeof NaN return?
A). number
B). NaN
C). undefined
D). object
Which operator would you use to determine the remainder of a division in JavaScript?
A). /
B). %
C). //
D). \
Which operator is used for string concatenation in JavaScript?
A). -
B). *
C). +
D). /
What does the + operator do when used with two numbers?
A). Concatenates them as strings
B). Adds them
C). Multiplies them
D). Subtracts them
Which of the following is not a comparison operator?
A). ==
B). >
C). <=
D). =
Which of the following operators can be used to compare two values, including type comparison?
A). ==
B). =
C). ===
D). !==
Which of the following is a logical operator in JavaScript?
A). &&
B). ||
C). !
D). All of the above