ASP .NET Textbox Values & jQuery math

Question

I'd like to do some simple addition and multiplication with ASP .NET textboxes and jQuery, if possible.

Quantity One: <asp:Textbox ID="txtQuantity1" runat="server" />

Quantity Two: <asp:Textbox ID="txtQuantity2" runat="server" />

Total Quantity: <asp:Textbox ID="txtTotalQuantity" runat="server" ReadOnly="true" />

Price: <asp:Textbox ID="txtPrice" runat="server" ReadOnly="true" Text="5.00" />

Total Order: <asp:Textbox ID="txtTotalOrder" runat="server" ReadOnly="true" />

I'd like the user to enter quantity 1 and quantity 2 in the text boxes and the script to add those quantities then multiply by price for total order asynchronously.

Can anyone point me in the right direction? Thanks.

Edit - tried this, no luck:

<script type="text/javascript">
//<![CDATA[
var total = (parseInt($('#<%= txtQuantity1.ClientID %>').val()) + parseInt($('#<%= txtQuantity2.ClientID %>').val())) * parseInt($('#<%= txtPrice.ClientID %>').val()); ct100_BodyContent_txtTotalOrder.initialvalue = total;
//]]>
</script>

no problem :) You're using initialvalue in that code you posted, which doesn't exist. Use value instead and you might have more success, or simply alert(total) at that point to check you're getting the correct calculation. — Town
– Town, Commented May 4, 2011 at 16:32

Vivian River · Accepted Answer · 2011-05-04 17:21:01Z

1

You were close. Here's what I got to work:

    var total = (parseInt($('#<%= txtQuantity1.ClientID %>').val()) + parseInt($('#<%= txtQuantity2.ClientID %>').val()))
         * parseInt($('#<%= txtPrice.ClientID %>').val());
    $('#<%=txtTotalOrder.ClientID %>').val(total);

answered May 4, 2011 at 17:21

Vivian River

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1 Comment

williamdnapier Over a year ago

I'm missing something then, no dice for me.

Abe Miessler · Accepted Answer · 2011-05-04 15:23:00Z

0

Try this:

var total = (parseInt($('#<%= txtQuantity1.ClientID %>').val()) + parseInt($('#<%= txtQuantity2.ClientID %>').val())) * parseInt($('#<%= txtPrice.ClientID %>').val());

answered May 4, 2011 at 15:23

Abe Miessler

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2 Comments

williamdnapier Over a year ago

Trying with parseInt(), no luck yet.

Town Over a year ago

@williamdnapier: initialvalue doesn't exist, it should be simply value.

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