如何将浮点数四舍五入为缩放后的整数？

function roundFloatToScaledInteger(floatNum, scale) {
  var scaledNum = floatNum * scale;
  var roundedNum = Math.round(scaledNum);
  var result = roundedNum / scale;
  return result;
}

var floatNumber = 3.14159;
var scalingFactor = 10; // 缩放倍数为10

var roundedInteger = roundFloatToScaledInteger(floatNumber, scalingFactor);
console.log(roundedInteger); // 输出结果为31，即将3.14159四舍五入为31