Date Regular Expression MM/DD/YYYY

var dateRegExp = “/^(1|01|2|02|3|03|4|04|5|05|6|06|7|07|8|08|9|09|10|11|12)\[/](([0-9])|([0-2][0-9])|([3][0-1]))\[/]\[0-9]{4}$/” i devided reqular expression into some parts below to understand it easily. “/^ (1|01|2|02|3|03|4|04|5|05|6|06|7|07|8|08|9|09|10|11|12)\ [/] (([0-9])|([0-2][0-9])|([3][0-1]))\ [/] \[0-9]{4} $/” I Hope, it Helps