ASP.NET jQuery 随笔 在TextBox里面阻止复制、剪切和粘贴事件

当用户要输入一些密码、信用卡信息和银行账号等敏感信息，用户更希望手工通过键盘敲入数据，而好过通过剪贴板复制粘贴。

我们先来看下实现后的效果：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Web.Default" %>

<!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 src="jquery-1.8.2.min.js" type="text/javascript"></script>

    <link href="Base.css" rel="stylesheet" type="text/css" />

    <style type="text/css">

       .header

       {

            background-color:#e9e9e9;

            font-weight:bold;

            font-size:large;

       }

    </style>

    <script type="text/javascript">

        $(document).ready(function () {

            $("input:password").bind("copy cut paste", function (e) {

                e.preventDefault(); //阻止事件的默认行为

                 alert("复制/剪切/粘贴已被禁止！");

            });

        });

    </script>

</head>

<body>

    <form id="form1" runat="server">

    <div style="margin: 100px auto; width: 400px; height: 200px;">

         <table cellpadding="5" cellspacing="1" border="0">

                <tr>

                    <td colspan="2" class="header">

                        修改密码

                    </td>

                </tr>

                <tr>

                    <td>

                        <asp:Label ID="lblCurrentPwd" Text="当前密码: " runat="server"></asp:Label>

                    </td>

                    <td>

                        <asp:TextBox ID="txtCurrentPwd" Width="200px" class="text" runat="server" TextMode="Password"></asp:TextBox>

                    </td>

                </tr>

                <tr>

                    <td>

                        <asp:Label ID="lblNewPwd" Text="新密码: " runat="server"></asp:Label>

                    </td>

                    <td>

                        <asp:TextBox ID="txtNewPwd" Width="200px" runat="server" class="text" TextMode="Password"></asp:TextBox>

                    </td>

                </tr>

                <tr>

                    <td>

                        <asp:Label ID="lblConfirmNewPwd" Text="确认新密码: " runat="server"></asp:Label>

                    </td>

                    <td>

                        <asp:TextBox ID="txtConfirmNewPwd" Width="200px" class="text" runat="server" TextMode="Password"></asp:TextBox>

                    </td>

                </tr>

                <tr>

                    <td>

                    </td>

                    <td>

                        <asp:Button ID="btnSubmit" class="gray button" runat="server" Text="提交" />&nbsp;&nbsp;<asp:Button ID="btnReset" runat="server" class="gray button"

                            Text="重置" />

                    </td>

                </tr>

            </table>

    </div>

    </form>

</body>

</html>