js相除出现浮点(JS浮点计算BUG屏蔽)

1. function accDiv(arg1, arg2) {            var t1 = 0, t2 = 0, t3 = 0, r1, r2;            try { t1 = arg1.toString().split(".")[1].length } catch (e) { }            try { t2 = arg2.toString().split(".")[1].length } catch (e) { }            r1 = Number(arg1.toString().replace(".", ""))            r2 = Number(arg2.toString().replace(".", ""))            if (r2 == 0)                return 0;            var result = String(r1 / r2);            try { t3 = result.toString().split(".")[1].length } catch (e) { }            var index = t2 - t1 - t3;            if (index < 0) {                result = result.replace(".", "");                while (result.length <= Math.abs(index)) {                    result = '0' + result;                }                var start = result.substring(0, result.length + index);                var end = result.substring(result.length + index, result.length);                result = start + '.' + end;                return Number(result);            }            else if (index > 0) {                result = result.replace(".", "");                while (result.length <= Math.abs(index)) {                    result += '0';                }                return Number(result);            }            else return Number(result.replace(".", ""));        }