vue小数相加

 add(args) {
      var lens = args.length;
      var d = 0;
      var sum = 0;
      for (var key in args) {
        var str = "" + args[key];
        if (str.indexOf(".") != -1) {
          var temp = str.split(".")[1].length;
          d = d < temp ? temp : d;
        }
      }
      var m = Math.pow(10, d);
      for (var key in args) {
        sum += args[key] * m;
      }
      return sum / m;
    }