<div>When adding a string and a number in JavaScript, it concatenates the values as strings from left to right, resulting in '52'. Subtraction then occurs, converting '52' to a number, resulting in 52 - 1 = 51.</div>
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 is the result of '20' - 10 in JavaScript?
A). 10
B). '10'
C). NaN
D). 20
What will be the result of 3 * 'A' in JavaScript?
A). Error
B). NaN
C). 0
D). 3
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 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 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