What does '5' + 3 evaluate to in JavaScript?

What does '5' + undefined evaluate to in JavaScript?

A). '5undefined'

B). undefined

C). 'NaN'

D). '5'

How do you concatenate multiple strings and a number in JavaScript?

A). Using the + operator

B). Using the concat() method

C). Using the join() method

D). Using the combine() method

What does 'apple' + 5 evaluate to in JavaScript?

A). 'apple5'

B). 10

C). 'apple10'

D). '5apple'

What is the result of 5 + 3 in JavaScript?

A). 8

B). 53

C). '8'

D). 15

What is the output of 5 + NaN in JavaScript?

A). NaN

B). 5

C). '5NaN'

D). 0

How does JavaScript handle the expression 5 + '3'?

A). Converts 5 to a string and concatenates

B). Converts '3' to a number and adds

C). Throws an error

D). Converts '5' to a number and adds

What is the result of '5' + true in JavaScript?

A). '5true'

B). '6'

C). 6

D). 'true5'

What is the result of 5 + null in JavaScript?

A). 5

B). null

C). 0

D). '5'

How do you add a number and a string in JavaScript to get a numeric result?

A). parseInt(string, 10) + number

B). Number(string) + number

C). string + number

D). number + string

How do you convert a string to a number in JavaScript before adding it to another number?

A). Number(string)

B). parseInt(string, 10)

C). string.toNumber()

D). string.convertToNumber()