SCCommon/mathUtil/src/index.ts

/* eslint-disable no-restricted-globals */
// 判断传入的是否是数字或者可转为数字的字符串
export const isNumber = (value: string | number) => {
  return /^(-|\+)?\d+(\.\d+)?$/.test(value as string);
};

export const roundForObj = (obj: string | number, decimal: number): number => {
  let value;
  if (obj === undefined || obj === null || isNaN(obj as number)) return 0;
  const n = 10 ** decimal;
  if (obj === +obj) {
    value = Math.round(obj * n) / n;
  } else {
    value = Math.round(Number(obj) * n) / n;
  }
  return value;
};

export const roundToString = (
  obj: string | number,
  decimal: number
): string => {
  const value = roundForObj(obj, decimal);
  return value.toFixed(decimal);
};