Answer & Solution
Answer: Option B
Solution:
When a string is added to a number, the number is converted to a string, resulting in concatenation.
Q
What is the output of '5' + 3?
Related Questions on Average
Which operator checks both value and type for equality in JavaScript?
A). ==
B). !=
C). ===
D). !==
What is the result of null == undefined?
A). 1
B). 0
C). Error
D). NaN
What is the result of typeof Symbol('id')?
A). symbol
B). object
C). string
D). undefined
What is the output of typeof null?
A). null
B). undefined
C). object
D). number
What is the data type of an array in JavaScript?
A). Array
B). Object
C). Collection
D). List
What will typeof [1, 2, 3] return?
A). array
B). object
C). number
D). list
What is the result of typeof undefined?
A). undefined
B). null
C). object
D). number
What is the result of null === undefined?
A). 1
B). 0
C). Error
D). NaN
Which function can convert a number to a string in JavaScript?
A). toString()
B). parseInt()
C). String()
D). Number()
How do you declare a variable with an undefined value?
A). let x;
B). let x = '';
C). let x = 0;
D). let x = null;