#### 1. 除法： * * * * * ~~~ function accDiv(arg1, arg2) { var t1 = 0, t2 = 0, r1, r2; try { t1 = arg1.toString().split(".")[1].length; } catch(e) {} try { t2 = arg2.toString().split(".")[1].length; } catch(e) {} with(Math) { r1 = Number(arg1.toString().replace(".", "")); r2 = Number(arg2.toString().replace(".", "")); return accMul((r1 / r2), pow(10, t2 - t1)); } } ~~~ #### 2. 乘法： * * * * * ~~~ function accMul(arg1, arg2) { var m = 0, s1 = arg1.toString(), s2 = arg2.toString(); try { m += s1.split(".")[1].length; } catch(e) {} try { m += s2.split(".")[1].length; } catch(e) {} console.log(s1.replace(".", "")); return Number(s1.replace(".", "")) * Number(s2.replace(".", "")) / Math.pow(10, m); } ~~~ 3. 加法： * * * * * ~~~ function accAdd(arg1, arg2) { var r1, r2, m; try { r1 = arg1.toString().split(".")[1].length; } catch(e) { r1 = 0; } try { r2 = arg2.toString().split(".")[1].length; } catch(e) { r2 = 0; } m = Math.pow(10, Math.max(r1, r2)); return(arg1 * m + arg2 * m) / m; } ~~~ 4. 减法： * * * * * ~~~ function Subtr(arg1, arg2) { var r1, r2, m, n; try { r1 = arg1.toString().split(".")[1].length; } catch(e) { r1 = 0; } try { r2 = arg2.toString().split(".")[1].length; } catch(e) { r2 = 0; } m = Math.pow(10, Math.max(r1, r2)); n = (r1 >= r2) ? r1 : r2; return((arg1 * m - arg2 * m) / m).toFixed(n); } ~~~