vue加法运算

Mul: function (arg1, arg2) {
      arg1 = parseFloat(arg1);
      arg2 = parseFloat(arg2);
      var m = 0,
        s1 = arg1.toString(),
        s2 = arg2.toString();
      try {
        m += s1.split(".")[1].length;
      } catch (e) {
        // 1
      }
      try {
        m += s2.split(".")[1].length;
      } catch (e) {
        // 1
      }
      return (
        (Number(s1.replace(".", "")) * Number(s2.replace(".", ""))) /
        Math.pow(10, m)
      );
    },