Tell us what’s happening:
I looked at the other posts made about this, but none were complete. I can’t get the correct output. I appear to use reduce right otherwise, just not correct in the math and I can’t see how! Thanks in advance!
Your code so far
var array = [4,5,6,7,8];
var singleVal = 0;
// Only change code below this line.
singleVal = array.reduce(function(previousVal,currentVal){
return currentVal - previousVal;
}, 0);
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Link to the challenge:
https://www.freecodecamp.org/challenges/condense-arrays-with-reduce