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我正在使用下面的代码来验证电子邮件地址并将电子邮件地址与重新输入电子邮件地址进行比较。但是当我输入错误格式的电子邮件地址并单击注册时，不知何故我没有弹出。

<%@ Page Title="" Language="VB" MasterPageFile="~/Main.master" AutoEventWireup="false"
    CodeFile="Registration.aspx.vb" Inherits="Registration" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
<script type="text/javascript" language="javascript">
    function verifyEmail() {

        var status = false;

        var emailRegEx = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;
        if (document.aspnetForm.txtEmailAddress.value.search(emailRegEx) == -1) 
        {
            alert("Please enter a valid email address.");
        }
        else if (document.aspnetForm.txtEmailAddress.value != document.aspnetForm.txtVerifyEmailAddress.value) 
        {
            alert("Email addresses do not match.  Please retype them to make sure they are the same.");
        }
        else 
        {
            alert("Woohoo!  The email address is in the correct format and they are the same.");
            status = true;
        }
        alert(status)
        return status;
    }
</script>

</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <table >

        <tr>
            <td >
                <asp:Label ID="Label3" runat="server" Text="Email Address"></asp:Label>
            </td>
            <td >
                <asp:TextBox ID="txtEmailAddress" Width="234px" runat="server"></asp:TextBox>
            </td>
            <td >
               </td>
        </tr>
        <tr>
            <td >
                <asp:Label ID="Label4" runat="server" Text="Re-Enter Email"></asp:Label>
            </td>
            <td >
                <asp:TextBox ID="txtVerifyEmailAddress" Width="234px" runat="server"></asp:TextBox>
            </td>
            <td >
               </td>
        </tr> 
        <tr>
            <td >

            </td>
            <td >
                <asp:Button ID="btnRegister" runat="server" Text="Register"  OnClientClick ="verifyEmail();" value="Check Email Address"/>
               &nbsp;&nbsp;&nbsp;&nbsp;
                <asp:Button ID="btnCancel" runat="server" Text="Cancel" />
            </td>
            <td >
               </td>
        </tr>
    </table>
</asp:Content>
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2 回答 2

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Asp .net 有正则表达式验证器和比较验证器，你应该使用它们

这是他们的链接

http://asp-net-example.blogspot.in/2009/02/aspnet-regularexpressionvalidator.html 和 http://asp.net-tutorials.com/validation/compare-validator/

于 2012-08-10T11:53:49.677 回答
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尝试这个

function validateEmail(email) { 
    var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\
".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA
-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
    return re.test(email);
}

根据您使用上述功能。

参考：在 JavaScript 中验证电子邮件地址？

于 2012-08-10T07:22:17.773 回答