Q
Which data type is used to represent whole numbers in JavaScript?

Answer & Solution

Answer: Option A
Solution:
The number data type in JavaScript is used to represent both whole numbers (integers) and decimal numbers (floats).
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What is the purpose of using the === operator in JavaScript?

A). Strict equality comparison

B). Loose equality comparison

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Which method is used to convert a string to a number in JavaScript?

A). toString()

B). parseInt()

C). parseFloat()

D). toNumber()

Which of the following is NOT a valid variable name in JavaScript?

A). _myVariable

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A). It will throw a syntax error

B). It will assign the variable a value of undefined

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What will be the output of the following code: console.log('Hello ' + 'World');?

A). Hello World

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Which variable declaration is appropriate if you want a variable to hold a constant value throughout the program execution?

A). let

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A). const

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