javascript - 如果数字前面有减号，如何将其格式化为 Lac 或 Crores

Question

将数字转换为 lakhs and crores仅适用于正数。
尝试转换为字符串并返回，但这对我来说不起作用。
我还需要转换负数，例如-330000 应转换为 -3.30 Lac

function numDifferentiation(val) {
  if (val >= 10000000) {
    val = (val / 10000000).toFixed(2) + ' Cr';
  } else if (val >= 100000) {
    val = (val / 100000).toFixed(2) + ' Lac';
  }
  /*else if(val >= 1000) val = (val/1000).toFixed(2) + ' K';*/
  return val;
}
console.log(numDifferentiation(NaN))
console.log(numDifferentiation(0))

console.log(numDifferentiation(1))
console.log(numDifferentiation(100))
console.log(numDifferentiation(1000))
console.log(numDifferentiation(100000))
console.log(numDifferentiation(10000000))

console.log(numDifferentiation(-1))
console.log(numDifferentiation(-100))
console.log(numDifferentiation(-1000))
console.log(numDifferentiation(-100000))
console.log(numDifferentiation(-10000000))

.as-console-wrapper {
  /* Make stack overflow console fullscreen */
  max-height: 100% !important;
  top: 0;
}

Answer 1

您可以使用Math.abs()返回数字的绝对值:

function numDifferentiation(value) {
  const val = Math.abs(value)
  if (val >= 10000000) return `${(value / 10000000).toFixed(2)} Cr`
  if (val >= 100000) return `${(value / 100000).toFixed(2)} Lac`
  return value;
}
console.log(numDifferentiation(NaN))
console.log(numDifferentiation(0))

console.log(numDifferentiation(1))
console.log(numDifferentiation(100))
console.log(numDifferentiation(1000))
console.log(numDifferentiation(100000))
console.log(numDifferentiation(10000000))

console.log(numDifferentiation(-1))
console.log(numDifferentiation(-100))
console.log(numDifferentiation(-1000))
console.log(numDifferentiation(-100000))
console.log(numDifferentiation(-10000000))

.as-console-wrapper {
  /* Make stack overflow console fullscreen */
  max-height: 100% !important;
  top: 0;
}