fenzhi-utils/globalMethods/CustomNumber/CustomThousandSplit.js

分值前端项目的js函数库

/**
 * 千分位分隔符
 * @param {number} num 被格式化的数字
 * @param {number} decimalPlaces
 * @returns
 */
/*
console.log(CustomThousandSplit(obj.a)); // ""
console.log(CustomThousandSplit(obj.b)); // ""
console.log(CustomThousandSplit(1000)); // "1,000"
console.log(CustomThousandSplit(-1000)); // "-1,000"
console.log(CustomThousandSplit(1234.5678, 2)); // "1,234.57"
console.log(CustomThousandSplit(-1234.5678, 2)); // "-1,234.57"
console.log(CustomThousandSplit(1234.5678)); // "1,234.5678"
console.log(CustomThousandSplit(-1234.5678)); // "-1,234.5678"
console.log(CustomThousandSplit(0, 2)); // "0"
console.log(CustomThousandSplit(0, 2)); // "0.00"
console.log(CustomThousandSplit(0.1234, 4)); // "0.1234"
console.log(CustomThousandSplit(-0.1234, 4)); // "-0.1234"
console.log(CustomThousandSplit(123456789)); // "123,456,789"
console.log(CustomThousandSplit(-123456789)); // "-123,456,789"
console.log(CustomThousandSplit(123456789.123456789, 5)); // "123,456,789.12346"
console.log(CustomThousandSplit(-123456789.123456789, 5)); // "-123,456,789.12346"
console.log(CustomThousandSplit(0.000000001, 9)); // "0.000000001"
console.log(CustomThousandSplit(-0.000000001, 9)); // "-0.000000001"
console.log(CustomThousandSplit(null)); // ""
console.log(CustomThousandSplit(undefined)); // ""

console.log(CustomThousandSplit('1000')); // "1,000"
console.log(CustomThousandSplit('-1000')); // "-1,000"
console.log(CustomThousandSplit('1234.5678', 2)); // "1,234.57"
console.log(CustomThousandSplit('-1234.5678', 2)); // "-1,234.57"
console.log(CustomThousandSplit('1234.5678')); // "1,234.5678"
console.log(CustomThousandSplit('-1234.5678')); // "-1,234.5678"
console.log(CustomThousandSplit('0')); // "0"
console.log(CustomThousandSplit('0.1234', 4)); // "0.1234"
console.log(CustomThousandSplit('-0.1234', 4)); // "-0.1234"
console.log(CustomThousandSplit('123456789')); // "123,456,789"
console.log(CustomThousandSplit('-123456789')); // "-123,456,789"
console.log(CustomThousandSplit('123456789.123456789', 5)); // "123,456,789.12346"
console.log(CustomThousandSplit('-123456789.123456789', 5)); // "-123,456,789.12346"
console.log(CustomThousandSplit('0.000000001', 9)); // "0.000000001"
console.log(CustomThousandSplit('-0.000000001', 9)); // "-0.000000001"
*/
export function CustomThousandSplit(num, decimalPlaces) {
  if ([null, undefined].includes(num)) {
    return '';
  }
  num = String(num);
  const thousandSeparator = ',';
  const decimalSeparator = '.';
  const sign = num[0] === '-' ? '-' : '';
  const absNum = Math.abs(parseFloat(num));
  const integerPart = Math.floor(absNum)
    .toString()
    .replace(/\B(?=(\d{3})+(?!\d))/g, thousandSeparator);
  const decimalPart =
    decimalPlaces !== undefined
      ? decimalSeparator + absNum.toFixed(decimalPlaces).split('.')[1]
      : '';
  return sign + integerPart + decimalPart;
}

// export function numberFormat(num) {
//   if (isNaN(parseFloat(num)) || parseFloat(num) === Infinity) return '';
//   let fixedIndex =
//     num.toString().indexOf('.') === -1
//       ? 0
//       : num.toString().split('.')[1].length;
//   return parseFloat(num)
//     .toFixed(fixedIndex)
//     .replace(/\d{1,3}(?=(\d{3})+(\.\d*)?$)/g, '$&,');
// }