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[英]Validation for my ASP textboxes is not working using javascript and ASP.NET
[英]javascript calculation asp.net textboxes
我在用戶向其中輸入數字的多視圖控件的幾個視圖中都有一系列文本框。 當用戶在文本框A3和A4中輸入數字時,總和顯示在文本框A5中,該文本框已禁用,因此用戶無法使用javascript輸入數字。 在整個視圖中,此功能對於不同的文本框對將發生8次。 代替我將javascript函數復制8次,有一種方法可以重用一個函數,因為文本框ID是唯一的區別。 在uni上學習javascript,因此到目前為止只有基礎知識。
的JavaScript
function A5Formula() {
var num1 = document.getElementById("<%=A3.ClientID %>");
var num2 = document.getElementById("<%=A4.ClientID %>");
var t1 = 0, t2 = 0; t3 = 0
if (num1.value != "") t1 = num1.value;
if (num2.value != "") t2 = num2.value;
t3 = parseInt(t1) + parseInt(t2);
document.getElementById("<%=A5.ClientID %>").value = t3;
document.getElementById("<%=A5hidden.ClientID %>").value = t3;
}
ASP.NET
<asp:TextBox ID="A3" runat="server" CssClass="inputcss" onblur="A5Formula()" CausesValidation="True" AutoCompleteType="Disabled"></asp:TextBox>
<asp:TextBox ID="A4" runat="server" CssClass="inputcss" onblur="A5Formula()" CausesValidation="True" AutoCompleteType="Disabled"></asp:TextBox>
<asp:TextBox ID="A5" runat="server" CssClass="inputcss" Enabled="False" AutoCompleteType="Disabled" ></asp:TextBox>
謝謝
簡化網頁
<%@ Page Language="VB" AutoEventWireup="false"
CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script language="javascript" type="text/javascript">
function ANFormula(id1, id2, idResult) {
var num1 = document.getElementById(id1);
var num2 = document.getElementById(id2);
var t1 = 0, t2 = 0, t3 = 0;
if (num1.value != "")
t1 = num1.value;
if (num2.value != "")
t2 = num2.value;
t3 = parseInt(t1) + parseInt(t2);
document.getElementById(idResult).value = t3;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td>
<asp:Label ID="Label2" runat="server" Text="A3">
</asp:Label>
<asp:TextBox ID="A3" runat="server"
onblur="ANFormula('<%=A3.ClientID %>', '<%=A4.ClientID %>',
'<%=A5.ClientID %>')"></asp:TextBox>
</td>
<td>
<asp:Label ID="Label3" runat="server" Text="A4">
</asp:Label>
<asp:TextBox ID="A4" runat="server"
onblur="ANFormula('<%=A3.ClientID %>', '<%=A4.ClientID %>',
'<%=A5.ClientID %>')"></asp:TextBox></td>
<td>
<asp:Label ID="Label4" runat="server" Text="A5">
</asp:Label>
<asp:TextBox ID="A5" runat="server"></asp:TextBox></td>
</tr>
</table>
</div>
</form>
</body>
</html>
您將需要編輯文本框標記,如下所示:
<asp:TextBox ID="A3" runat="server" CssClass="inputcss" onblur="A5Formula(this);" CausesValidation="True" AutoCompleteType="Disabled"></asp:TextBox>
通過在函數中添加“ this”作為參數,可以將對象傳遞給函數(在本例中為文本框A3)。
並在javascript函數中:
function A5Formula(e){
if (e.id=="A3" || e.id=="A4"){
//some processing code here depending on its id and do it for other ids
}
}
它將檢查傳遞的對象的ID,以便能夠控制要更改的文本框值
首先,您需要告訴parseInt
您想將數字解析為十進制數字parseInt(t1, 10)
。
然后,你可以使用data-
屬性組這些控件,例如data-add-operation
來標識操作數和data-add-operation-result
為ID的結果字段。
<asp:TextBox ID="A3" data-add-operation="8" runat="server" CssClass="inputcss" onblur="formula(event)" CausesValidation="True" AutoCompleteType="Disabled"></asp:TextBox>
<asp:TextBox ID="A4" data-add-operation="8" runat="server" CssClass="inputcss" onblur="formula(event)" CausesValidation="True" AutoCompleteType="Disabled"></asp:TextBox>
<asp:TextBox ID="A5" data-add-operation-result="8" runat="server" CssClass="inputcss" Enabled="False" AutoCompleteType="Disabled" ></asp:TextBox>
並且在javascript中
function formula(e) {
var total = 0;
var groupId = $(e.sourceTarget).data("data-add-operation");
$.each($("[data-add-operation=" + groupdId + "]", function(index, item) {
total += parseInt(item.val(), 10);
});
$("[data-add-operation-result=" + groupdId + "]").val(total);
}
的JavaScript
function ANFormula(id1, id2, idResult, idHidden) {
var num1 = document.getElementById(id1);
var num2 = document.getElementById(id2);
var t1 = 0, t2 = 0, t3 = 0;
if (num1.value != "")
t1 = num1.value;
if (num2.value != "")
t2 = num2.value;
t3 = parseInt(t1) + parseInt(t2);
document.getElementById(idResult).value = t3;
document.getElementById(idHidden).value = t3;
}
ASP.NET
<asp:TextBox ID="A3" runat="server" CssClass="inputcss" CausesValidation="True" AutoCompleteType="Disabled"
onblur="ANFormula('<%=A3.ClientID %>', '<%=A4.ClientID %>', '<%=A5.ClientID %>', '<%=A5hidden.ClientID %>')"></asp:TextBox>
<asp:TextBox ID="A4" runat="server" CssClass="inputcss" CausesValidation="True" AutoCompleteType="Disabled"
onblur="ANFormula('<%=A3.ClientID %>', '<%=A4.ClientID %>', '<%=A5.ClientID %>', '<%=A5hidden.ClientID %>"></asp:TextBox>
<asp:TextBox ID="A5" runat="server" CssClass="inputcss" Enabled="False" AutoCompleteType="Disabled" ></asp:TextBox>
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