Display Expected Time by combination of two dropdowns i.e. time and duration

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I am new to Javascript and need your help. I have two dropdowns time and duration and by the combination of these I need to display calculated time in javascript.

Suppose I select 11:00 AM from ddlValidityFrom and 3.00 from ddlValidityTo so the lblExpectedOutTime should display 2:00 PM.

Please help!

<label id="lblValidityFrom">Enter Validity Period From<span class="RedFieldsANR">*</span></label>

<asp:DropDownList ID="ddlValidityFrom" runat="server" CssClass="inputDDLTime">

    <asp:ListItem Value="0" Text="Select Time"></asp:ListItem>

    <asp:ListItem Text="06:00 AM"></asp:ListItem>

    <asp:ListItem Text="06:30 AM"></asp:ListItem>

    <asp:ListItem Text="07:00 AM"></asp:ListItem>

    <asp:ListItem Text="07:30 AM"></asp:ListItem>

    <asp:ListItem Text="08:00 AM"></asp:ListItem>

    <asp:ListItem Text="08:30 AM"></asp:ListItem>

    <asp:ListItem Text="09:00 AM"></asp:ListItem>

    <asp:ListItem Text="09:30 AM"></asp:ListItem>

    <asp:ListItem Text="10:00 AM"></asp:ListItem>

    <asp:ListItem Text="10:30 AM"></asp:ListItem>

    <asp:ListItem Text="11:00 AM"></asp:ListItem>

    <asp:ListItem Text="11:30 AM"></asp:ListItem>

    <asp:ListItem Text="12:00 PM"></asp:ListItem>

    <asp:ListItem Text="12:30 PM"></asp:ListItem>

    <asp:ListItem Text="01:00 PM"></asp:ListItem>

    <asp:ListItem Text="01:30 PM"></asp:ListItem>

    <asp:ListItem Text="02:00 PM"></asp:ListItem>

    <asp:ListItem Text="02:30 PM"></asp:ListItem>

    <asp:ListItem Text="03:00 PM"></asp:ListItem>

    <asp:ListItem Text="03:30 PM"></asp:ListItem>

    <asp:ListItem Text="04:00 PM"></asp:ListItem>

    <asp:ListItem Text="04:30 PM"></asp:ListItem>

    <asp:ListItem Text="05:00 PM"></asp:ListItem>

    <asp:ListItem Text="05:30 PM"></asp:ListItem>

    <asp:ListItem Text="06:00 PM"></asp:ListItem>

</asp:DropDownList>



<span id="lblValidityTo" class="spBox fl">Validity Period</span>

<asp:DropDownList ID="ddlValidityTo" runat="server" CssClass="inputDDLTimeHrs" onchange="calculateExpectedHours()">



    <asp:ListItem Text="0.30"></asp:ListItem>

    <asp:ListItem Text="1.00"></asp:ListItem>

    <asp:ListItem Text="1.30"></asp:ListItem>

    <asp:ListItem Text="2.00" Selected="True"></asp:ListItem>

    <asp:ListItem Text="2.30"></asp:ListItem>

    <asp:ListItem Text="3.00"></asp:ListItem>

    <asp:ListItem Text="3.30"></asp:ListItem>

    <asp:ListItem Text="4.00"></asp:ListItem>

    <asp:ListItem Text="4.30"></asp:ListItem>

    <asp:ListItem Text="5.00"></asp:ListItem>

    <asp:ListItem Text="5.30"></asp:ListItem>

    <asp:ListItem Text="6.00"></asp:ListItem>

    <asp:ListItem Text="6.30"></asp:ListItem>

    <asp:ListItem Text="7.00"></asp:ListItem>

    <asp:ListItem Text="7.30"></asp:ListItem>

    <asp:ListItem Text="8.00"></asp:ListItem>

    <asp:ListItem Text="8.30"></asp:ListItem>

    <asp:ListItem Text="9.00"></asp:ListItem>

</asp:DropDownList>

<span id="lblHrs" class="sp_Box fl">Hrs.</span>

<asp:RequiredFieldValidator ID="rfvValidityFrom" EnableClientScript="true" runat="server" ControlToValidate="ddlValidityFrom" InitialValue="0"

    ErrorMessage="Required" ValidationGroup="valSponsoredVisitor" CssClass="RedReqFieldsValidityFrom"></asp:RequiredFieldValidator>

</p>

<p>

<label id="lblExpectedOutTimeText">Expected Out Time</label>

<label id="lblExpectedOutTime"></label>

</p>

edited Nov 23 '18 at 7:32

Gaurav

13810

asked Nov 23 '18 at 6:25

user10694121

add a comment |

I am new to Javascript and need your help. I have two dropdowns time and duration and by the combination of these I need to display calculated time in javascript.

Suppose I select 11:00 AM from ddlValidityFrom and 3.00 from ddlValidityTo so the lblExpectedOutTime should display 2:00 PM.

Please help!

<label id="lblValidityFrom">Enter Validity Period From<span class="RedFieldsANR">*</span></label>

<asp:DropDownList ID="ddlValidityFrom" runat="server" CssClass="inputDDLTime">

    <asp:ListItem Value="0" Text="Select Time"></asp:ListItem>

    <asp:ListItem Text="06:00 AM"></asp:ListItem>

    <asp:ListItem Text="06:30 AM"></asp:ListItem>

    <asp:ListItem Text="07:00 AM"></asp:ListItem>

    <asp:ListItem Text="07:30 AM"></asp:ListItem>

    <asp:ListItem Text="08:00 AM"></asp:ListItem>

    <asp:ListItem Text="08:30 AM"></asp:ListItem>

    <asp:ListItem Text="09:00 AM"></asp:ListItem>

    <asp:ListItem Text="09:30 AM"></asp:ListItem>

    <asp:ListItem Text="10:00 AM"></asp:ListItem>

    <asp:ListItem Text="10:30 AM"></asp:ListItem>

    <asp:ListItem Text="11:00 AM"></asp:ListItem>

    <asp:ListItem Text="11:30 AM"></asp:ListItem>

    <asp:ListItem Text="12:00 PM"></asp:ListItem>

    <asp:ListItem Text="12:30 PM"></asp:ListItem>

    <asp:ListItem Text="01:00 PM"></asp:ListItem>

    <asp:ListItem Text="01:30 PM"></asp:ListItem>

    <asp:ListItem Text="02:00 PM"></asp:ListItem>

    <asp:ListItem Text="02:30 PM"></asp:ListItem>

    <asp:ListItem Text="03:00 PM"></asp:ListItem>

    <asp:ListItem Text="03:30 PM"></asp:ListItem>

    <asp:ListItem Text="04:00 PM"></asp:ListItem>

    <asp:ListItem Text="04:30 PM"></asp:ListItem>

    <asp:ListItem Text="05:00 PM"></asp:ListItem>

    <asp:ListItem Text="05:30 PM"></asp:ListItem>

    <asp:ListItem Text="06:00 PM"></asp:ListItem>

</asp:DropDownList>



<span id="lblValidityTo" class="spBox fl">Validity Period</span>

<asp:DropDownList ID="ddlValidityTo" runat="server" CssClass="inputDDLTimeHrs" onchange="calculateExpectedHours()">



    <asp:ListItem Text="0.30"></asp:ListItem>

    <asp:ListItem Text="1.00"></asp:ListItem>

    <asp:ListItem Text="1.30"></asp:ListItem>

    <asp:ListItem Text="2.00" Selected="True"></asp:ListItem>

    <asp:ListItem Text="2.30"></asp:ListItem>

    <asp:ListItem Text="3.00"></asp:ListItem>

    <asp:ListItem Text="3.30"></asp:ListItem>

    <asp:ListItem Text="4.00"></asp:ListItem>

    <asp:ListItem Text="4.30"></asp:ListItem>

    <asp:ListItem Text="5.00"></asp:ListItem>

    <asp:ListItem Text="5.30"></asp:ListItem>

    <asp:ListItem Text="6.00"></asp:ListItem>

    <asp:ListItem Text="6.30"></asp:ListItem>

    <asp:ListItem Text="7.00"></asp:ListItem>

    <asp:ListItem Text="7.30"></asp:ListItem>

    <asp:ListItem Text="8.00"></asp:ListItem>

    <asp:ListItem Text="8.30"></asp:ListItem>

    <asp:ListItem Text="9.00"></asp:ListItem>

</asp:DropDownList>

<span id="lblHrs" class="sp_Box fl">Hrs.</span>

<asp:RequiredFieldValidator ID="rfvValidityFrom" EnableClientScript="true" runat="server" ControlToValidate="ddlValidityFrom" InitialValue="0"

    ErrorMessage="Required" ValidationGroup="valSponsoredVisitor" CssClass="RedReqFieldsValidityFrom"></asp:RequiredFieldValidator>

</p>

<p>

<label id="lblExpectedOutTimeText">Expected Out Time</label>

<label id="lblExpectedOutTime"></label>

</p>

edited Nov 23 '18 at 7:32

Gaurav

13810

asked Nov 23 '18 at 6:25

user10694121

add a comment |

I am new to Javascript and need your help. I have two dropdowns time and duration and by the combination of these I need to display calculated time in javascript.

Suppose I select 11:00 AM from ddlValidityFrom and 3.00 from ddlValidityTo so the lblExpectedOutTime should display 2:00 PM.

Please help!

<label id="lblValidityFrom">Enter Validity Period From<span class="RedFieldsANR">*</span></label>

<asp:DropDownList ID="ddlValidityFrom" runat="server" CssClass="inputDDLTime">

    <asp:ListItem Value="0" Text="Select Time"></asp:ListItem>

    <asp:ListItem Text="06:00 AM"></asp:ListItem>

    <asp:ListItem Text="06:30 AM"></asp:ListItem>

    <asp:ListItem Text="07:00 AM"></asp:ListItem>

    <asp:ListItem Text="07:30 AM"></asp:ListItem>

    <asp:ListItem Text="08:00 AM"></asp:ListItem>

    <asp:ListItem Text="08:30 AM"></asp:ListItem>

    <asp:ListItem Text="09:00 AM"></asp:ListItem>

    <asp:ListItem Text="09:30 AM"></asp:ListItem>

    <asp:ListItem Text="10:00 AM"></asp:ListItem>

    <asp:ListItem Text="10:30 AM"></asp:ListItem>

    <asp:ListItem Text="11:00 AM"></asp:ListItem>

    <asp:ListItem Text="11:30 AM"></asp:ListItem>

    <asp:ListItem Text="12:00 PM"></asp:ListItem>

    <asp:ListItem Text="12:30 PM"></asp:ListItem>

    <asp:ListItem Text="01:00 PM"></asp:ListItem>

    <asp:ListItem Text="01:30 PM"></asp:ListItem>

    <asp:ListItem Text="02:00 PM"></asp:ListItem>

    <asp:ListItem Text="02:30 PM"></asp:ListItem>

    <asp:ListItem Text="03:00 PM"></asp:ListItem>

    <asp:ListItem Text="03:30 PM"></asp:ListItem>

    <asp:ListItem Text="04:00 PM"></asp:ListItem>

    <asp:ListItem Text="04:30 PM"></asp:ListItem>

    <asp:ListItem Text="05:00 PM"></asp:ListItem>

    <asp:ListItem Text="05:30 PM"></asp:ListItem>

    <asp:ListItem Text="06:00 PM"></asp:ListItem>

</asp:DropDownList>



<span id="lblValidityTo" class="spBox fl">Validity Period</span>

<asp:DropDownList ID="ddlValidityTo" runat="server" CssClass="inputDDLTimeHrs" onchange="calculateExpectedHours()">



    <asp:ListItem Text="0.30"></asp:ListItem>

    <asp:ListItem Text="1.00"></asp:ListItem>

    <asp:ListItem Text="1.30"></asp:ListItem>

    <asp:ListItem Text="2.00" Selected="True"></asp:ListItem>

    <asp:ListItem Text="2.30"></asp:ListItem>

    <asp:ListItem Text="3.00"></asp:ListItem>

    <asp:ListItem Text="3.30"></asp:ListItem>

    <asp:ListItem Text="4.00"></asp:ListItem>

    <asp:ListItem Text="4.30"></asp:ListItem>

    <asp:ListItem Text="5.00"></asp:ListItem>

    <asp:ListItem Text="5.30"></asp:ListItem>

    <asp:ListItem Text="6.00"></asp:ListItem>

    <asp:ListItem Text="6.30"></asp:ListItem>

    <asp:ListItem Text="7.00"></asp:ListItem>

    <asp:ListItem Text="7.30"></asp:ListItem>

    <asp:ListItem Text="8.00"></asp:ListItem>

    <asp:ListItem Text="8.30"></asp:ListItem>

    <asp:ListItem Text="9.00"></asp:ListItem>

</asp:DropDownList>

<span id="lblHrs" class="sp_Box fl">Hrs.</span>

<asp:RequiredFieldValidator ID="rfvValidityFrom" EnableClientScript="true" runat="server" ControlToValidate="ddlValidityFrom" InitialValue="0"

    ErrorMessage="Required" ValidationGroup="valSponsoredVisitor" CssClass="RedReqFieldsValidityFrom"></asp:RequiredFieldValidator>

</p>

<p>

<label id="lblExpectedOutTimeText">Expected Out Time</label>

<label id="lblExpectedOutTime"></label>

</p>

edited Nov 23 '18 at 7:32

Gaurav

13810

asked Nov 23 '18 at 6:25

user10694121

I am new to Javascript and need your help. I have two dropdowns time and duration and by the combination of these I need to display calculated time in javascript.

Suppose I select 11:00 AM from ddlValidityFrom and 3.00 from ddlValidityTo so the lblExpectedOutTime should display 2:00 PM.

Please help!

<label id="lblValidityFrom">Enter Validity Period From<span class="RedFieldsANR">*</span></label>

<asp:DropDownList ID="ddlValidityFrom" runat="server" CssClass="inputDDLTime">

    <asp:ListItem Value="0" Text="Select Time"></asp:ListItem>

    <asp:ListItem Text="06:00 AM"></asp:ListItem>

    <asp:ListItem Text="06:30 AM"></asp:ListItem>

    <asp:ListItem Text="07:00 AM"></asp:ListItem>

    <asp:ListItem Text="07:30 AM"></asp:ListItem>

    <asp:ListItem Text="08:00 AM"></asp:ListItem>

    <asp:ListItem Text="08:30 AM"></asp:ListItem>

    <asp:ListItem Text="09:00 AM"></asp:ListItem>

    <asp:ListItem Text="09:30 AM"></asp:ListItem>

    <asp:ListItem Text="10:00 AM"></asp:ListItem>

    <asp:ListItem Text="10:30 AM"></asp:ListItem>

    <asp:ListItem Text="11:00 AM"></asp:ListItem>

    <asp:ListItem Text="11:30 AM"></asp:ListItem>

    <asp:ListItem Text="12:00 PM"></asp:ListItem>

    <asp:ListItem Text="12:30 PM"></asp:ListItem>

    <asp:ListItem Text="01:00 PM"></asp:ListItem>

    <asp:ListItem Text="01:30 PM"></asp:ListItem>

    <asp:ListItem Text="02:00 PM"></asp:ListItem>

    <asp:ListItem Text="02:30 PM"></asp:ListItem>

    <asp:ListItem Text="03:00 PM"></asp:ListItem>

    <asp:ListItem Text="03:30 PM"></asp:ListItem>

    <asp:ListItem Text="04:00 PM"></asp:ListItem>

    <asp:ListItem Text="04:30 PM"></asp:ListItem>

    <asp:ListItem Text="05:00 PM"></asp:ListItem>

    <asp:ListItem Text="05:30 PM"></asp:ListItem>

    <asp:ListItem Text="06:00 PM"></asp:ListItem>

</asp:DropDownList>



<span id="lblValidityTo" class="spBox fl">Validity Period</span>

<asp:DropDownList ID="ddlValidityTo" runat="server" CssClass="inputDDLTimeHrs" onchange="calculateExpectedHours()">



    <asp:ListItem Text="0.30"></asp:ListItem>

    <asp:ListItem Text="1.00"></asp:ListItem>

    <asp:ListItem Text="1.30"></asp:ListItem>

    <asp:ListItem Text="2.00" Selected="True"></asp:ListItem>

    <asp:ListItem Text="2.30"></asp:ListItem>

    <asp:ListItem Text="3.00"></asp:ListItem>

    <asp:ListItem Text="3.30"></asp:ListItem>

    <asp:ListItem Text="4.00"></asp:ListItem>

    <asp:ListItem Text="4.30"></asp:ListItem>

    <asp:ListItem Text="5.00"></asp:ListItem>

    <asp:ListItem Text="5.30"></asp:ListItem>

    <asp:ListItem Text="6.00"></asp:ListItem>

    <asp:ListItem Text="6.30"></asp:ListItem>

    <asp:ListItem Text="7.00"></asp:ListItem>

    <asp:ListItem Text="7.30"></asp:ListItem>

    <asp:ListItem Text="8.00"></asp:ListItem>

    <asp:ListItem Text="8.30"></asp:ListItem>

    <asp:ListItem Text="9.00"></asp:ListItem>

</asp:DropDownList>

<span id="lblHrs" class="sp_Box fl">Hrs.</span>

<asp:RequiredFieldValidator ID="rfvValidityFrom" EnableClientScript="true" runat="server" ControlToValidate="ddlValidityFrom" InitialValue="0"

    ErrorMessage="Required" ValidationGroup="valSponsoredVisitor" CssClass="RedReqFieldsValidityFrom"></asp:RequiredFieldValidator>

</p>

<p>

<label id="lblExpectedOutTimeText">Expected Out Time</label>

<label id="lblExpectedOutTime"></label>

</p>

javascript asp.net

edited Nov 23 '18 at 7:32

Gaurav

13810

asked Nov 23 '18 at 6:25

user10694121

edited Nov 23 '18 at 7:32

Gaurav

13810

asked Nov 23 '18 at 6:25

user10694121

edited Nov 23 '18 at 7:32

Gaurav

13810

edited Nov 23 '18 at 7:32

Gaurav

13810

edited Nov 23 '18 at 7:32

Gaurav

13810

asked Nov 23 '18 at 6:25

user10694121

asked Nov 23 '18 at 6:25

user10694121

asked Nov 23 '18 at 6:25

user10694121

add a comment |

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