^(([1-9]\d*(\.\d*[1-9])?)|(0\.\d*[1-9]))$

当我输入到（2.）时候就出错 怎么让2.通过 继续输入

^((((1[6-9] |[2-9]\d)\d{2})-(0?[13578] |1[02])-(0?[1-9] |[12]\d |3[01])) |(((1[6-9] |[2-9]\d)\d{2})-(0?[13456789] |1[012])-(0?[1-9] |[12]\d |30)) |(((1[6-9] |[2-9]\d)\d{2})-0?2-(0?[1-9] |1\d |2[0-8])) |(((1[6-9] |[2-9]\d)(0[48] |[2468][048] |[13579][26]) |((16 |[2468][048] |[3579][26])00))-0?2-29-))   (20 |21 |22 |23 |[0-1]?\d):[0-5]?\d:[0-5]?\d$

比较复杂...