~~~ //float偏移处理 eg. 1.67*100结果会偏移，使用mul(1.67*100) mul(a, b) { let c = 0, d = a.toString().replace(',',''), e = b.toString(); try { c += d.split(".")[1].length; } catch (f) {} try { c += e.split(".")[1].length; } catch (f) {} return Number(d.replace(".", "")) * Number(e.replace(".", "")) / Math.pow(10, c); } } ~~~