Answer & Solution
Answer: Option A
Solution:
<div>Subtracting a number from a string in JavaScript converts the string to a number, so '7' - 3 results in 4.</div>
Q
What will be the output of '7' - 3 in JavaScript?
Related Questions on Average
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 does the operator
A).
B). do in JavaScript?
C). Logical AND
D). Logical OR
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
What is the purpose of the % operator in JavaScript?
A). Exponentiation
B). Division
C). Modulus
D). Concatenation
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 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
What will be the output of 10 + '2' - 1 in JavaScript?
A). '101'
B). '10'
C). NaN
D). Error