math - How to fix 0.3+0.6=0.89999999999 in Javascript?

When adding two float values, I will get something like:

0.3+0.6 = 0.89999999999 

I know what's going on. In C# we can use decimal instead, but in Javascript, how to fix it?

Answer

MathUtils

MathUtils = {
    roundToPrecision: function(subject, precision) {
        return +((+subject).toFixed(precision));
    }
};

console.log(MathUtils.roundToPrecision(0.3 + 0.6, 1)) // 0.9;