请教这个js验证错在哪
日期：2014-05-18 浏览次数：20606 次
请问这个js验证错在哪？
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DiaoChaInfo.aspx.cs" Inherits="DiaoChaInfo" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript" language="javascript">
function checkreg() {
j = 0;
for (i = 0; i < document.form1.Repeater1.RadioButtonList1.length; i++) {
if (document.form1.Repeater1.RadioButtonList1.checked == true) {
j++;
}
}
if (j == 0) {
alert('请选择');
return false;
}
return true
}
</script>
</head>
<body>
<form id="form1" runat="server" onsubmit="return checkreg()">
<div>
<div>
<asp:Label ID="DiaoChaTitle" runat="server" Text=""></asp:Label></div>
<div>
<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
<ItemTemplate>
<asp:HiddenField ID="HiddenField1" runat="server" Value='<%#Eval("timuID")%>' />
<%#Eval("timuName")%>
<asp:RadioButtonList ID="RadioButtonList1" runat="server" DataTextField="answerName"
DataValueField="answerID">
</asp:RadioButtonList>
</ItemTemplate>
</asp:Repeater>
</div>
<asp:Button ID="submit" runat="server" Text="提交答卷" />
</div>
</form>
</body>
</html>
请问这个js验证错在哪？
------解决方案--------------------
<div>
<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
改成 <div id="chk_all">
<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
js如下修改
j = 0;
var chk_all = document.getElementById("chk_all");
var check = chk_all.getElementsByTagName("radio");
for (i = 0; i < check.length; i++) {
if (check[i].checked == true) {
j++;
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DiaoChaInfo.aspx.cs" Inherits="DiaoChaInfo" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript" language="javascript">
function checkreg() {
j = 0;
for (i = 0; i < document.form1.Repeater1.RadioButtonList1.length; i++) {
if (document.form1.Repeater1.RadioButtonList1.checked == true) {
j++;
}
}
if (j == 0) {
alert('请选择');
return false;
}
return true
}
</script>
</head>
<body>
<form id="form1" runat="server" onsubmit="return checkreg()">
<div>
<div>
<asp:Label ID="DiaoChaTitle" runat="server" Text=""></asp:Label></div>
<div>
<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
<ItemTemplate>
<asp:HiddenField ID="HiddenField1" runat="server" Value='<%#Eval("timuID")%>' />
<%#Eval("timuName")%>
<asp:RadioButtonList ID="RadioButtonList1" runat="server" DataTextField="answerName"
DataValueField="answerID">
</asp:RadioButtonList>
</ItemTemplate>
</asp:Repeater>
</div>
<asp:Button ID="submit" runat="server" Text="提交答卷" />
</div>
</form>
</body>
</html>
请问这个js验证错在哪？
------解决方案--------------------
<div>
<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
改成 <div id="chk_all">
<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
js如下修改
j = 0;
var chk_all = document.getElementById("chk_all");
var check = chk_all.getElementsByTagName("radio");
for (i = 0; i < check.length; i++) {
if (check[i].checked == true) {
j++;
}
}
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