Validating a Date Format

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This is used to validate a date in a specific format. The code example is to validate whether it is a valid dd/MM/yyyy Date Format.

function ValidateDateFormat(input) {
    var dateString = input.value;

    var regex = /(((0[1-9]|1[0-2])\/(0|1)[0-9]|2[0-9]|3[0-1])\/((19|20)\d\d))$/;

    //Check whether valid dd/MM/yyyy Date Format.
    if (regex.test(dateString) || dateString.length == 0) {
        ShowHideError("none");
    } else {
        ShowHideError("block");
        input.focus();
        input.select();
    }
};
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2022-3-24 11:20 上传

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