Answer & Solution
Answer: Option A
Solution:
<div>When adding a string and a number in JavaScript, it concatenates the values as strings from left to right, resulting in '1010'.</div>
Q
What will be the result of '10' + 10 in JavaScript?
Related Questions on Average
What does the typeof operator return for an array in JavaScript?
A). 'array'
B). 'object'
C). 'null'
D). 'undefined'
What will be the output of '2' + 2 + 2 in JavaScript?
A). '222'
B). 6
C). 4
D). Error
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 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 operator
A).
B). do in JavaScript?
C). Logical AND
D). Logical OR
What is the purpose of the % operator in JavaScript?
A). Exponentiation
B). Division
C). Modulus
D). Concatenation
What will be the result of 10 + '5' in JavaScript?
A). 15
B). 105
C). NaN
D). Error
What will be the output of '5' + 2 - 1 in JavaScript?
A). '52'
B). 6
C). '4'
D). Error
What will be the value of x after executing the code: let x = 10; x -= 2; x *= 3;?
A). 24
B). 30
C). 36
D). 12
What is the value of x after executing the code: let x = 5; x *= 2 + 3;?
A). 10
B). 25
C). 13
D). 15