Question

I want to validate 24 hour formatted Time, Time is in the following format.

HH:MM:SS

How could i go for it. Please help me.
My HTMl Code is

    <asp:TextBox Width="120px" MaxLength="20" ID="txtEndTime" runat="server"></asp:TextBox>
                                <ajaxctrl:maskededitextender id="metxtEndTime" runat="server" targetcontrolid="txtEndTime"
                                    mask="99:99:99" messagevalidatortip="true" masktype="Number" inputdirection="LeftToRight"
                                    clearmaskonlostfocus="false" acceptnegative="None" errortooltipenabled="True" />

Answer 1

To only validate the format, you can use this:

var valid = (timeStr.search(/^\d{2}:\d{2}:\d{2}$/) != -1);

If you’re trying to validate the values as well, you can try this:

var valid = (timeStr.search(/^\d{2}:\d{2}:\d{2}$/) != -1) &&
            (timeStr.substr(0,2) >= 0 && timeStr.substr(0,2) <= 24) &&
            (timeStr.substr(3,2) >= 0 && timeStr.substr(3,2) <= 59) &&
            (timeStr.substr(6,2) >= 0 && timeStr.substr(6,2) <= 59);