How function constructor works in the below scenario ?

Question

let a=10; let b=20; function sum(){console.log(a+b)}; sum()
In the above scenario I am getting the output as 3.
But,
let a=10; let b=20; let sum=new Function("console.log(a+b)"); sum()
I am getting an error saying a is not defined. Why ?

Answer 1

Levi may be you are trying both in same code and getting 'a' already defined..?

Try this :

let a=10; let b=20;
function sum(){ console.log(a+b) };
sum()

let a2=10; let b2=20;

let sum2=new Function("console.log(a2+b2)");
sum2()

Answer 2

Recheck once. It's working fine for me..

Answer 3

Jayakrishna🇮🇳 Could u spot of if there is any error in my code. I tried but not getting the output