Hi! I solved the Condense arrays with reduce challenge but I don’t understand what does the “0” (zero) at the end of the function mean? Is it only to set the starting number? That’s the example in the question: var singleVal = array.reduce(function(previousVal, currentVal) { return previousVal - …

Condense arrays with reduce- why "0"?

kevcomedia October 27, 2016, 11:44am 2

It’s the initial value. If it’s not provided, the first element in the array will be the initial value.

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