Can someone please help me understand

1

Basic JavaScript: Understanding Undefined Value returned from a Function:

my code only part works:

function addFive(){
sum +=5;
}
var result = addFive();

function addThree(){
sum = sum + 3;
}
var result = addThree();

I find Js quite complicated at times, just trying to get to grips with how things work.
many thanks

2

@lukeMersh
what’s the challenge link?

I think the point here that your functions can do something even if they do not return anything (they do not have a return statement so they return undefined by default) but still can change variables and stuff

3

I am stuck with the coding on this…
I think i am stuck on this part:

Once both functions have ran, the sum should be equal to 8.
4

have you maybe removed the definition of the sum variable?

please give the challenge link

5

Here is the challenge: " Create a function addFive without any arguments. This function adds 5 to the sum variable, but its returned value is undefined ."

6

and where is the declaration of the sum variable? have you maybe removed it?

please, provide the challenge link, so I know what’s the starting code

7

fixed it :smiley:
i removed the :var result = addFive();
happy days