Q
What will be the result of 10 + '5' in JavaScript?

Answer & Solution

Answer: Option B
Solution:
<div>Adding a number and a string in JavaScript results in a concatenated string, so '10' + '5' becomes '105'.</div>
Related Questions on Average

What will be the result of '10' + 10 in JavaScript?

A). '1010'

B). 20

C). NaN

D). Error

What will be the result of 5 == '5' in JavaScript?

A). 1

B). 0

C). Error

D). Undefined

What will be the value of x after executing the code: let x = 10; x /= 2;?

A). 5

B). 20

C). 0

D). 2

What will be the result of 3 * 'A' in JavaScript?

A). Error

B). NaN

C). 0

D). 3

What is the value of x after executing the code: let x = 5; x *= 2 + 3;?

A). 10

B). 25

C). 13

D). 15

What does the unary operator + do to a string in JavaScript?

A). Concatenates it

B). Ignores it

C). Converts it to a number

D). Throws an error

What does the typeof operator return for an array in JavaScript?

A). 'array'

B). 'object'

C). 'null'

D). 'undefined'

What does the operator

A).

B). do in JavaScript?

C). Logical AND

D). Logical OR

What will be the output of 20 / '5' in JavaScript?

A). 4

B). NaN

C). Infinity

D). Error

What is the value of x after executing the code: let x = 10; x += 5; x /= 3;?

A). 5

B). 15

C). 33

D). 67