Virtually the same as solution but not working

So I wrote:

// The global variable
var fixedValue = 4;

function incrementer () {
  // Only change code below this line
  return fixedValue++;
  // Only change code above this line
var newValue = incrementer(); 

The entire purpose of this challenge is to avoid side effects. The ++ operator changes the value stored in the variable, which is a side effect.

To see this, try calling the function twice. You should get the same number out each time, but your code won’t do that - it will provide two different values.

So I am to understand that



fixedValue + 1

cause two different things?

Yes. The first changes the value stored in the variable. The second does not.

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