Answer & Solution
Answer: Option A
Solution:
The true boolean is coerced to the number 1, resulting in the sum 6, which is a number.
Q
In JavaScript, what will be the type of a variable x after x = 5 + true;?
Related Questions on Average
Given the code: let y = 10; y = true;, what is the type of y after execution?
A). number
B). boolean
C). string
D). object
What is the type of the value returned by parseFloat('3.14abc')?
A). number
B). string
C). NaN
D). undefined
Which operator is used to determine the type of a variable in JavaScript?
A). typeof
B). instanceof
C). type
D). isType
How can you check if a variable is an array in JavaScript?
A). typeof variable === 'array'
B). Array.isArray(variable)
C). variable instanceof array
D). variable.constructor === array
What is the result of the following code: let x = 5; x = 'hello'; console.log(typeof x);?
A). number
B). string
C). undefined
D). object
What is the initial type of a variable declared with let a;?
A). null
B). number
C). undefined
D). object
Which type conversion happens automatically in the expression 3 + '5'?
A). Number to String
B). String to Number
C). Boolean to String
D). Number to Boolean
What will typeof null return in JavaScript?
A). null
B). undefined
C). object
D). number
What does the parseInt function do in JavaScript?
A). Converts a number to a string
B). Converts a string to an integer
C). Converts a boolean to a number
D). Converts an array to a number
What is the type of the value returned by JSON.parse('null')?
A). null
B). string
C). object
D). undefined