因为经常需要js来处理显示，就做下笔记
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 (r1 / r2) * pow(10, t2 - t1);
}
}
乘法：
function accMul(arg1, arg2) {
var m = 0,
s1 = arg1.toString(),
s2 = arg2.toString(),
number,
z = '';
try {
m += s1.split(".")[1].length
} catch (e) {
console.log(e);
}
try {
m += s2.split(".")[1].length
} catch (e) {
console.log(e);
}
console.log(`m = ${m}`)
number = Number(s1.replace(".", "")) * Number(s2.replace(".", "")) / Math.pow(10, m);
if (m) {
try {
var n = m - number.toString().split(".")[1].length;
if (n) {
for (var i = 0; i < n; i++) {
z += '0';
}
}
var r = number.toString() + z;
return r
} catch (e) {
for (var i = 0; i < m; i++) {
z += '0';
}
var r = number.toString() + '.' + z;
return r
}
}
return Number(s1.replace(".", "")) * Number(s2.replace(".", "")) / Math.pow(10, m)
}
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
}