百分比大于0且小于或等于100的正则表达式

Question

我在网上搜索并提出： /(^100(\.0{1,2})?$)|(^([1-9]([0-9])?|0)(\.[0-9]{1,2})?$)/

问题是它接受0.

Answer 1

Perhaps you are thinking about the problem wrongly. A better method if possible would be to convert the string to a double and perform the check using arithmetic operators。

const examplePercentage = '0.5%';
const percentageAsFloat = parseFloat(examplePercentage); // 0.5
const isValid = percentageAsFloat > 0 && percentageAsFloat <= 100; // true

Answer 2

试试这个：

^0*(100(\.0{1,2})?|[1-9][0-9]?(\.[0-9]{1,2})?|0\.(0[1-9]|[1-9][0-9]?))$

它处理与>= 1不同的< 1。

但是我会解析数字并检查它的值。