vue 浮点型乘除法精确计算 Vue.prototype.NumberMul = function(arg1, arg2) { var m = 0; var s1 = arg1.toString(); var s2 = arg2.toString(); try { m += s1.split(".")[1].length; } catch (e) {} try { m += s2.split(".")[1].length; } catch (e) {} return Number(s1.replace(".", "")) * Number(s2.replace(".", "")) / Math.pow(10, m); } 浮点型加法： Vue.prototype.NumberAdd = function(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); }