vtils/_cjs/utils/formatNumber.js

一个面向业务的 JavaScript/TypeScript 实用程序库。

"use strict";

exports.__esModule = true;
exports.formatNumber = formatNumber;
/**
 * 格式化数字选项。
 */

/**
 * 格式化数字。
 *
 * @param value 要格式化的数字
 * @param options 选项
 * @returns 返回格式化后的数值
 * @example
 * ```typescript
 * formatNumber(1314.56789) // => '1,314.56789'
 * formatNumber(1314.56789, { thousandsSeparator: ' ' }) // => '1 314.56789'
 * formatNumber(1314.56789, { thousandthsSeparator: ',' }) // => '1,314.567,89'
 * ```
 */
function formatNumber(value, options) {
  var _ref = options || {},
    _ref$thousandsSeparat = _ref.thousandsSeparator,
    thousandsSeparator = _ref$thousandsSeparat === void 0 ? ',' : _ref$thousandsSeparat,
    _ref$thousandthsSepar = _ref.thousandthsSeparator,
    thousandthsSeparator = _ref$thousandthsSepar === void 0 ? '' : _ref$thousandthsSepar;
  var _String$split = String(Math.abs(value)).split('.'),
    integer = _String$split[0],
    _String$split$ = _String$split[1],
    decimal = _String$split$ === void 0 ? '' : _String$split$;
  if (thousandsSeparator !== '') {
    var result = '';
    while (integer.length > 3) {
      result = "" + thousandsSeparator + integer.slice(-3) + result;
      integer = integer.slice(0, integer.length - 3);
    }
    integer = "" + integer + result;
  }
  if (thousandthsSeparator !== '') {
    var _result = '';
    while (decimal.length > 3) {
      _result = "" + _result + decimal.slice(0, 3) + thousandthsSeparator;
      decimal = decimal.slice(3);
    }
    decimal = "" + _result + decimal;
  }
  var numeral = "" + (value < 0 ? '-' : '') + integer + (decimal ? "." + decimal : '');
  return numeral;
}