Error in Javascript Key Press with Textbox
I have an ASP.NET Textbox
<asp:TextBox ID="tb1" runat="server" Width="300px" OnClientKeyPress="Calculat
When I run the code and and do the keypress, I get an error message saying that tb1 is not defined. I have also tried to do:
tb1.Attributes.Add("OnKeyP
With no luck... I suspect i am making a rather simple mistake?
<asp:TextBox ID="tb1" runat="server" Width="300px" OnClientKeyPress="Calculat
When I run the code and and do the keypress, I get an error message saying that tb1 is not defined. I have also tried to do:
tb1.Attributes.Add("OnKeyP
With no luck... I suspect i am making a rather simple mistake?
ASKER
<script type="text/javascript">
function CalculateTotal(tb1, tb2, tb3) {
try {
tb3.value = tb2.value + tb3.value;
} catch (err) {
}
}
function GetKeyPress() {
alert("you Pressed " & event.keyCode);
}
</script>
Where I used GetKePress to ensure the event was actually working
function CalculateTotal(tb1, tb2, tb3) {
try {
tb3.value = tb2.value + tb3.value;
} catch (err) {
}
}
function GetKeyPress() {
alert("you Pressed " & event.keyCode);
}
</script>
Where I used GetKePress to ensure the event was actually working
SOLUTION
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this will do
<asp:TextBox ID="tb1" runat="server" Width="300px" OnClientKeyPress="CalculateTotal(document.getElementById('<%= tb1.ClientID %>'), document.getElementById('<%= tb2.ClientID %>',document.getElementById('<%= tb3.ClientID %>')">0.00</asp:TextBox>
<script>
function CalculateTotal(a,b,c)
{
c.value=parseInt(a.value) + parseInt(b.value);
}
</script>
ASKER
OnClientKeyPress="Calculat
This is what the source code looks like when I view it, I added some more brackets as I thought some were missing. I would assume that the problem is now being caused by : <%
This is what the source code looks like when I view it, I added some more brackets as I thought some were missing. I would assume that the problem is now being caused by : <%
SOLUTION
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can you please try this one also
OnClientKeyPress="Calculat
OnClientKeyPress="Calculat
If you pleace the controls inside another control or a master page then the control name will change. So it is safe to use the clientid. Since client id is server side we need to round it using <% %>
ASKER
The ClientID approach seems the more logical, but the issue is that for whatever reason it's not well formed when ASP builds the page:
<input name="ctl00$login_content$
or
<input name="ctl00$login_content$
I suspect the fact that it's '<%= it's trying to treat it as text.
<input name="ctl00$login_content$
or
<input name="ctl00$login_content$
I suspect the fact that it's '<%= it's trying to treat it as text.
ASKER
I must point out that the text is being parsed when I post it & lt ;%
SOLUTION
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ASKER CERTIFIED SOLUTION
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ASKER
This is how I got it to work.
Amount.Attributes.Add("onk
Cheers for the help lads, gave me the direction I needed.
Amount.Attributes.Add("onk
Cheers for the help lads, gave me the direction I needed.
function CalculateTotals() {
var tbAmount = document.getElementById('Amount').value;
var tbTax = document.getElementById('Tax').value;
var str = tbAmount;
str = str.replace(/[_]/g, '');
var tb1 = parseFloat(str, 10);
if (isNaN(tb1)) tb1 = 0.00;
var str2 = tbTax
str2 = str2.replace(/[_]/g, '');
var tb2 = parseFloat(str2, 10);
if (isNaN(tb2)) tb2 = 0.00;
var total = tb1 + tb2
document.getElementById('NetTotal').value = total;
}
ANd how did you define the elements so they had "normal" ids?
tb1.Attributes.Add("OnKeyP
can you share code of CalculateTotal() function ?