function

Question

Let addition=function(num1=20,num2){
sum=num1+num2;
return sum;
}
Let result =addition(, 30);
console.log (result)

In calling only second parameter,first parameter is give given by optional parameter. How to give it

Answer 1

Oh okay, yes, for the second example it is correct. The first argument will be 30, the second argument will use the default value (50).

Answer 2

It's not possible buddy ...

I told you that before, optional parameters (which have default values) must be placed after all the mandatory parameters (which values must be given).

Answer 3

No buddy, it's awkward for a code to look like that ...

Answer 4

Optional parameter(s) ideally should be placed after mandatory parameter(s), not the other way around.

Answer 5

Let addition=function(num1,num2=50){
sum=num1+num2;
return sum;
}
Let result =addition(30);
console.log (result)

I need this type answer above

Answer 6

Same like I have calling with only second parameter, optional parameter value is given first one

Answer 7

For that one, `addition` will be called with 30 as <num1> and 50 as <num2>. The function will return sum of <num1> added b6 <num2> that is 30 + 50.

Answer 8

Yes same like how to apply second calling parameter.

Answer 9

I didn't get your point ...

Answer 10

In this case we calling first parameter, we had given second parameter is optional is it wright

Answer 11

Same way,
We calling second parameter, we had given first parameter is optional value is given. How it works... How it given

.

Answer 12

I nedd, for according to the very first example . the first argument will use the default value (10).the calling with only second argument is it possible

Answer 13

OK thank you. Finally one doubt

Answer 14

But we use calling like

Addition(undefined, 50) is it currect, use this way

Answer 15

But executed successfully. Is it currect

Answer 16

`undefined` is not a number, I can see that it works, but passing `undefined` to replace a numeric argument (even optional and has default value) doesn't seem like a good practice.

Answer 17

OK thank you so much for your help.

Answer 18

Ok buddy no prob 👌