Number(Number("1200").toFixed(8)) //1200
Number(Number("1200.0").toFixed(8)) //1200
Number(Number("1200.0001000").toFixed(8)) //1200.0001
Number(Number("1200.000100001").toFixed(8)) //1200.0001
Number(Number("1200.000100011").toFixed(8)) //1200.00010001
number型只保留几位,若小数后全是0则去除的方式
![](https://img2024.cnblogs.com/blog/35695/202403/35695-20240328092537879-1189167464.jpg)