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

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

How does JavaScript handle the expression 5 + undefined?

A). Converts undefined to NaN and returns NaN

B). Converts 5 to a string and concatenates

C). Throws an error

D). Converts 5 to undefined and returns undefined

How do you concatenate two strings in JavaScript?

A). string1.concat(string2)

B). string1 + string2

C). string1.join(string2)

D). string1.combine(string2)

What is the output of 5 + NaN in JavaScript?

A). NaN

B). 5

C). '5NaN'

D). 0

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

A). '5undefined'

B). undefined

C). 'NaN'

D). '5'

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()

What is the result of '5' + '3' + 2 in JavaScript?

A). '532'

B). '8'

C). '5'

D). '53'

What will be the output of 'apple' + null in JavaScript?

A). 'applenull'

B). 'apple'

C). 'null'

D). 'appl'

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'