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 will be the output of 10 + '2' - 1 in JavaScript?
A). '101'
B). '10'
C). NaN
D). Error
What does the operator === do in JavaScript?
A). Checks for equality without type conversion
B). Assigns a value
C). Performs a strict comparison
D). Concatenates strings
What will be the result of 3 * 'A' in JavaScript?
A). Error
B). NaN
C). 0
D). 3
What is the result of '20' - 10 in JavaScript?
A). 10
B). '10'
C). NaN
D). 20
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 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 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 will be the value of x after executing the code: let x = 5; x += '2';?
A). 7
B). '72'
C). 52
D). NaN
What is the purpose of the % operator in JavaScript?
A). Exponentiation
B). Division
C). Modulus
D). Concatenation