asp.net2.0密码强度验证

1、建立Default.aspx文件,代码如下:

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_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>无标题页</title>

</head>

<script language="javascript" type="text/javascript"> 

    //CharMode函数 

    //测试某个字符是属于哪一类. 

    function CharMode(iN){ 

        if (iN>=48 && iN <=57) //数字 

        return 1; 

        if (iN>=65 && iN <=90) //大写字母 

        return 2; 

        if (iN>=97 && iN <=122) //小写 

        return 4; 

        else 

        return 8; //特殊字符 

    } 

    //bitTotal函数 

    //计算出当前密码当中一共有多少种模式 

    function bitTotal(num){ 

        modes=0; 

        for (i=0;i<4;i++){ 

        if (num & 1) modes++; 

        num>>>=1; 

        } 

        return modes; 

    } 

    //checkStrong函数 

    //返回密码的强度级别 



    function checkStrong(sPW){ 

        if (sPW.length<=4) 

        return 0; //密码太短 

        Modes=0; 

        for (i=0;i<sPW.length;i++){ 

        //测试每一个字符的类别并统计一共有多少种模式. 

        Modes|=CharMode(sPW.charCodeAt(i)); 

        } 

        return bitTotal(Modes); 

    } 



    //pwStrength函数 

    //当用户放开键盘或密码输入框失去焦点时,根据不同的级别显示不同的颜色 

    function pwStrength(pwd){ 

        O_color="#e0f0ff"; 

        L_color="#FF0000"; 

        M_color="#FF9900"; 

        H_color="#33CC00"; 

        if (pwd==null||pwd==''){ 

            Lcolor=Mcolor=Hcolor=O_color; 

        } 

        else

        { 

            S_level=checkStrong(pwd); 

            switch(S_level)

            { 

                case 0: 

                Lcolor=Mcolor=Hcolor=O_color; 

                case 1: 

                Lcolor=L_color; 

                Mcolor=Hcolor=O_color; 

                break; 

                case 2: 

                Lcolor=Mcolor=M_color; 

                Hcolor=O_color; 

                break; 

                default: 

                Lcolor=Mcolor=Hcolor=H_color; 

            } 

        } 



        document.getElementById("strength_L").style.background=Lcolor; 

        document.getElementById("strength_M").style.background=Mcolor; 

        document.getElementById("strength_H").style.background=Hcolor; 

        return; 

    } 



</script> 

<body>

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

    <div>

        输入密码:<asp:TextBox ID="TextBox1" runat="server" onKeyUp=pwStrength(this.value) onBlur=pwStrength(this.value) ></asp:TextBox><br />

        密码强度:

        <table border="1" cellpadding="1" borderColorDark="#fdfeff" borderColorLight="#99ccff" cellspacing="1" style="width: 200px; display: inline; background-color:#e0f0ff">

            <tr>

                <td id="strength_L" style="width: 100px; height: 19px;" align="center">

                    弱</td>

                <td id="strength_M" style="width: 100px; height: 19px;" align="center">

                    中</td>

                <td id="strength_H" style="width: 100px; height: 19px;" align="center">

                    强</td>

            </tr>

        </table>

    </div>

    </form>

</body>

</html>

2、Default.aspx.cs代码如下:

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;



public partial class _Default : System.Web.UI.Page 

{

    protected void Page_Load(object sender, EventArgs e)

    {



    }

}

3:运行效果如下: 
asp.net2.0密码强度验证









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