Question

I am using decimal numbers with 2 precision point (ie. 1.38). I want to round the number according to that following:

1) If the second precision point is larger or equal to 8 (1.38 or 1.39), then round it to 1.4, else don’t change.

How can I do that in Javascript. toFixed doesn’t work well because it rounds 1.75 to 1.8, which is not what I want.

Answer 1

Heres a rather clunky way of doing it:

var round = function(n) {
    var h = (n * 100) % 10;
    return h >= 8
        ? n + (10 - h) * .01
        : n;
};