RegExp为0:59至99:59或0至99

Question

我要为严格的正则表达式0:59来99:59小时.它应该允许0到99小时.怎么可能呢.

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/^([0-9]{1,2}(\:[0-5][0-9])?)$/

工作正常

Answer 1

即使是简单的东西\d{1,2}(:[0-5]\d)?就足够了.

\d                 A digit
\d{1,2}            One or two digits
\d{1,2}:           One or two digits followed by :
\d{1,2}:[0-5]      One or two digits followed by : followed by a digit 0 to 5
\d{1,2}:[0-5]\d    ...followed by a digit (0 to 5) and another digit
\d{1,2}(:[0-5]\d)? ...making the :XX part optional due to the ?

第二次更新:已修复以考虑可选:XX部分.