Please help me

Question

What is the output of this code?
function magic(a, b = 40) {
return a + b;
}
console.log(magic(2));

Answer 1

function magic(a,b=40)
This is a function which has two parameters (a,b) where the second parameter b is set with default value of 40. Which means while calling the magic function I can pass only one argument or both arguments.
console.log(magic(2)) so here we just passed 2 as the argument, since we already have a value for "b parameter"
so 2+42 returned by the function as 42

Answer 2

Output: 42
in console.log(magic(2)) the argument is passed to the first parameter (i.e. to a)

Answer 3

i am also don't understood please explain how 42

Answer 4

so if a=40 and b=2 so a+b=c it would 40+2=42

Answer 5

42

Answer 6

i dont understand why it was 42. please explain

Answer 7

42

Answer 8

42