Javascript Interview Questions (Question- 1)

Javascript Interview Questions (for beginners)

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Theres are lot of interview questions in javascript, we will cover one by one in future stories,

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Question 1:

What will be the output of below code

const number = 10 + “10” - 10
console.log(number)

Try it by yourself and comeback to understand the answer

Answer:

As we know DMSA lineup

It will always start with addition in above scenario

10 + “10”

Remember, two operands addition ➕ will always convert its types to strings if any one of the operand is string

Basically, its concatenate

So 10 + “10” will be “1010”

Now left statement is “1010” – 10

If one operand is number and another is string in the subtraction, the output only comes in number

Here, “1010” will first convert into 1010

And the 1010 – 10

An output will 1000

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