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 operator
A).
B). do in JavaScript?
C). Logical AND
D). Logical OR
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 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 does the typeof operator return for an array in JavaScript?
A). 'array'
B). 'object'
C). 'null'
D). 'undefined'
What will be the result of 10 + '5' in JavaScript?
A). 15
B). 105
C). NaN
D). Error
What will be the output of '7' - 3 in JavaScript?
A). 4
B). '4'
C). NaN
D). Error
What is the purpose of the % operator in JavaScript?
A). Exponentiation
B). Division
C). Modulus
D). Concatenation
What will be the result of 5 == '5' in JavaScript?
A). 1
B). 0
C). Error
D). Undefined
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 will be the output of 20 / '5' in JavaScript?
A). 4
B). NaN
C). Infinity
D). Error