<div>When adding a number and a string in JavaScript, it concatenates the values as strings from left to right, resulting in '102'. Subtraction then occurs, converting '102' to a number, resulting in 102 - 1 = 101.</div>
What will be the output of '2' + 2 + 2 in JavaScript?
A). '222'
B). 6
C). 4
D). Error
What will be the result of '10' + 10 in JavaScript?
A). '1010'
B). 20
C). NaN
D). Error
What will be the result of 10 + '5' in JavaScript?
A). 15
B). 105
C). NaN
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 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 result of 3 * 'A' in JavaScript?
A). Error
B). NaN
C). 0
D). 3
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 purpose of the % operator in JavaScript?
A). Exponentiation
B). Division
C). Modulus
D). Concatenation
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