Rounding off to 6 decimals

Question

I would like to round off this code to 6 digits

function plus-minus(arr) {

    let pos = 0;
    let neg = 0;
    let zero = 0;
    let len = 6;

    for (let i = 0; i < len; i++){
         if (arr[i] > 0) {
            neg++;
        } else if (arr[i] < 0) {
            pos++;

        } else  {
            zero++;
        } 
           }
    console.log(pos/len);
    console.log(neg/len);
    console.log(zero/len);
}

Possible duplicate of [Round to at most 2 decimal places (only if necessary)](https://stackoverflow.com/questions/11832914/round-to-at-most-2-decimal-places-only-if-necessary) — Bakudan, Aug 22 '19 at 10:41

score 1 · Answer 1 · edited Aug 22 '19 at 10:52

1

For rounding you can use a little trick like this:

var number = 0.00012367
var round = 6;
number = Math.round(number * 10**round) / (10**round)
console.log(number)

Or you can use the toFixed method:

var number = 0.00012367
number = number.toFixed(6)
console.log(number)

edited Aug 22 '19 at 10:52

Mark Fisher

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answered Aug 22 '19 at 10:41

Dominik Matis

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2

You have it with [.toFixed()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toFixed) – Bakudan Aug 22 '19 at 10:44
That's correct, I forgot about it. I'll add it to answer, thanks – Dominik Matis Aug 22 '19 at 10:46
Thanks, guys I managed to use the .toFixed() method: console.log((pos/len).toFixed(6)); console.log((neg/len).toFixed(6)); console.log((zero/len).toFixed(6)); – Richard Bongani Phala Aug 22 '19 at 11:22

Rounding off to 6 decimals

1 Answers1