2020-7-1

1.两位小数字输出，超过两位保持不动

function formmatData(val) {
    if (val) {
      if (val.toString().split(".")[1]) {
        return val.toString().split(".")[1].length == 2
          ? val.toString()
          : val.toString() + "0";
      } else {
        return val.toString() + ".00";
      }
    }
  }
  console.log(formmatData(3434.3)); //3434.30
  console.log(formmatData(141.44)); //141.44
  console.log(formmatData(141));//141.00
  console.log(formmatData(141.5466126)); //141.54661260