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76

regular expression to validate datetime format (MM/DD/YYYY)

rated 0 times [ 80] [ 4] / answers: 1 / hits: 183800 / 12 Years ago, mon, march 4, 2013, 12:00:00

I am trying to validate datetime format MM/DD/YYYY. Here is the code I am trying please help.

 function ValidateDate(testdate) {

        var Status

        var reg = /^(((0[1-9]|[12]d|3[01])/(0[13578]|1[02])/((19|[2-9]d)d{2}))|((0[1-9]|[12]d|30)/(0[13456789]|1[012])/((19|[2-9]d)d{2}))|((0[1-9]|1d|2[0-8])/02/((19|[2-9]d)d{2}))|(29/02/((1[6-9]|[2-9]d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$/g;

        if (!reg.test(testdate)) {

            Status = false;

        }

        return Status;

    }

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freddiejarretk

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answered 12 Years ago sabinal · Accepted Answer

Try your regex with a tool like http://jsregex.com/ (There is many) or better, a unit test.

For a native validation:

function validateDate(testdate) {

    var date_regex = /^d{2}/d{2}/d{4}$/ ;

    return date_regex.test(testdate);

}

In your case, to validate (MM/DD/YYYY), with a year between 1900 and 2099, I'll write it like that:

function validateDate(testdate) {

    var date_regex = /^(0[1-9]|1[0-2])/(0[1-9]|1d|2d|3[01])/(19|20)d{2}$/ ;

    return date_regex.test(testdate);

}