Answer & Solution
Answer: Option B
Solution:
JavaScript implicitly converts the string '10' to a number in arithmetic operations, resulting in 5.
Q
What will let x = '10'; let y = x - 5; console.log(y); output in JavaScript?
Related Questions on Average
Which of the following is a primitive data type in JavaScript?
A). Object
B). Array
C). Function
D). Boolean
What is the outcome of typeof undefined in JavaScript?
A). String
B). Undefined
C). Null
D). Number
What is the data type of the value true in JavaScript?
A). Number
B). String
C). Boolean
D). Undefined
What will let x = null; console.log(typeof x); output in JavaScript?
A). Object
B). Null
C). Undefined
D). Number
What is the data type of the value 'null' (with quotes) in JavaScript?
A). String
B). Number
C). Null
D). Undefined
What is the data type of the value 42 in JavaScript?
A). String
B). Boolean
C). Number
D). Null
What will the following code snippet output: let a = 10; a += '5'; console.log(a); in JavaScript?
A). '105'
B). 105
C). 15
D). '15'
Which data type represents an intentional absence of any value in JavaScript?
A). Null
B). Undefined
C). String
D). Number
What will be the result of typeof 'hello' in JavaScript?
A). String
B). Number
C). Undefined
D). Function
What does NaN represent in JavaScript?
A). Not a Number
B). Infinity
C). Positive Infinity
D). Negative Infinity