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?
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A). String
B). Boolean
C). Number
D). Object
What is the output of typeof null?
A). null
B). undefined
C). object
D). number
Which operator checks both value and type for equality in JavaScript?
A). ==
B). !=
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A). ''
B).
C). ``
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A). undefined
B). null
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How do you declare a variable with an undefined value?
A). let x;
B). let x = '';
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A). 1
B). 0
C). Error
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B). object
C). undefined
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A). Array
B). Object
C). Collection
D). List
Which of the following is a falsy value in JavaScript?
A). 0
B).
C). null
D). All of the above