Answer & Solution
Answer: Option A
Solution:
In JavaScript, null and undefined are considered equal with the == operator.
Q
What is the result of null == undefined?
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What is the data type of true in JavaScript?
A). String
B). Boolean
C). Number
D). Object
What is the output of '5' + 3?
A). 8
B). 53
C). 8
D). Error
What is the output of typeof function() {}?
A). function
B). object
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What is the result of typeof undefined?
A). undefined
B). null
C). object
D). number
Which of the following is a falsy value in JavaScript?
A). 0
B).
C). null
D). All of the above
Which method can be used to convert a string to a number in JavaScript?
A). parseInt()
B). toString()
C). toNumber()
D). parseStr()
What will typeof NaN return?
A). number
B). NaN
C). undefined
D). object
What is the output of typeof null?
A). null
B). undefined
C). object
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A). 1
B). 0
C). Error
D). NaN
What is the result of typeof Symbol('id')?
A). symbol
B). object
C). string
D). undefined