JQuery遮罩层登录

          

  下面把jquery实现遮罩层,也就是上面效果的代码贴出来,大家可以借鉴的看看

  css样式:

  

View Code
/* DEFAULTS
----------------------------------------------------------
*/

body   
{
    
/*background: #b6b7bc;*/
    font-size
: .80em;
    font-family
: "Helvetica Neue", "Lucida Grande", "Segoe UI", Arial, Helvetica, Verdana, sans-serif;
    margin
: 0px;
    padding
: 0px;
    color
: #696969;
}
td
{
    height
:35px;
}
        
/*设置弹出层窗口的大小*/
        #divLoginWindow
        
{
            display
: none;
            position
: absolute;
            width
: 400px;
            height
: 210px;
            border
: #bfe5b3 solid 1px;
            z-index
: 200;
            background
: #fff;
        
}
        #closeBtn
        
{
            position
: absolute;
            right
: 10px;
            top
: 10px;
            cursor
: hand;
        
}
        
/***遮罩层****/
        #greybackground
        
{
            background
: #000;
            display
: block;
            z-index
: 100;
            width
: 100%;
            position
: absolute;
            top
: 0;
            left
: 0;
        
}
 a
 
{
     cursor
:pointer;
 
}
/**********************************/

a:link, a:visited
{
    color
: #034af3;
}

a:hover
{
    color
: #1d60ff;
    text-decoration
: none;
}

a:active
{
    color
: #034af3;
}

p
{
    margin-bottom
: 10px;
    line-height
: 1.6em;
}


/* HEADINGS   
----------------------------------------------------------
*/

h1, h2, h3, h4, h5, h6
{
    font-size
: 1.5em;
    color
: #666666;
    font-variant
: small-caps;
    text-transform
: none;
    font-weight
: 200;
    margin-bottom
: 0px;
}

h1
{
    font-size
: 1.6em;
    padding-bottom
: 0px;
    margin-bottom
: 0px;
}

h2
{
    font-size
: 1.5em;
    font-weight
: 600;
}

h3
{
    font-size
: 1.2em;
}

h4
{
    font-size
: 1.1em;
}

h5, h6
{
    font-size
: 1em;
}

/* this rule styles <h1> and <h2> tags that are the 
first child of the left and right table columns 
*/
.rightColumn > h1, .rightColumn > h2, .leftColumn > h1, .leftColumn > h2
{
    margin-top
: 0px;
}


/* PRIMARY LAYOUT ELEMENTS   
----------------------------------------------------------
*/

.page
{
    width
: 960px;
    background-color
: #fff;
    margin
: 0px auto 0px auto;
    border
: 1px solid #496077;
}

.header
{
    position
: relative;
    margin
: 0px;
    padding
: 0px;
    background
: #4b6c9e;
    width
: 100%;
}

.header h1
{
    font-weight
: 700;
    margin
: 0px;
    padding
: 0px 0px 0px 20px;
    color
: #f9f9f9;
    border
: none;
    line-height
: 2em;
    font-size
: 2em;
}

.main
{
    padding
: 0px 12px;
    margin
: 12px 8px 8px 8px;
    min-height
: 420px;
}

.leftCol
{
    padding
: 6px 0px;
    margin
: 12px 8px 8px 8px;
    width
: 200px;
    min-height
: 200px;
}

.footer
{
    color
: #4e5766;
    padding
: 8px 0px 0px 0px;
    margin
: 0px auto;
    text-align
: center;
    line-height
: normal;
}


/* TAB MENU   
----------------------------------------------------------
*/

div.hideSkiplink
{
    background-color
:#3a4f63;
    width
:100%;
}

div.menu
{
    padding
: 4px 0px 4px 8px;
}

div.menu ul
{
    list-style
: none;
    margin
: 0px;
    padding
: 0px;
    width
: auto;
}

div.menu ul li a, div.menu ul li a:visited
{
    background-color
: #465c71;
    border
: 1px #4e667d solid;
    color
: #dde4ec;
    display
: block;
    line-height
: 1.35em;
    padding
: 4px 20px;
    text-decoration
: none;
    white-space
: nowrap;
}

div.menu ul li a:hover
{
    background-color
: #bfcbd6;
    color
: #465c71;
    text-decoration
: none;
}

div.menu ul li a:active
{
    background-color
: #465c71;
    color
: #cfdbe6;
    text-decoration
: none;
}

/* FORM ELEMENTS   
----------------------------------------------------------
*/

fieldset
{
    margin
: 1em 0px;
    padding
: 1em;
    border
: 1px solid #ccc;
}

fieldset p 
{
    margin
: 2px 12px 10px 10px;
}

fieldset.login label, fieldset.register label, fieldset.changePassword label
{
    display
: block;
}

fieldset label.inline 
{
    display
: inline;
}

legend 
{
    font-size
: 1.1em;
    font-weight
: 600;
    padding
: 2px 4px 8px 4px;
}

input.textEntry 
{
    width
: 320px;
    border
: 1px solid #ccc;
}

input.passwordEntry 
{
    width
: 320px;
    border
: 1px solid #ccc;
}

div.accountInfo
{
    width
: 42%;
}

/* MISC  
----------------------------------------------------------
*/

.clear
{
    clear
: both;
}

.title
{
    display
: block;
    float
: left;
    text-align
: left;
    width
: auto;
}

.loginDisplay
{
    font-size
: 1.1em;
    display
: block;
    text-align
: right;
    padding
: 10px;
    color
: White;
    cursor
:pointer;
}

.loginDisplay a:link
{
    color
: white;
}

.loginDisplay a:visited
{
    color
: white;
}

.loginDisplay a:hover
{
    color
: white;
}

.failureNotification
{
    font-size
: 1.2em;
    color
: Red;
}

.bold
{
    font-weight
: bold;
}

.submitButton
{
    text-align
: right;
    padding-right
: 10px;
}

   页面:

  

View Code
  <!--登录窗口:Begin-->
        <div id="divLoginWindow">
            <table style=" 100%;" border="0" cellpadding="2" cellspacing="0">
                <tr style="background-color: #e0f3d9; border-bottom: #bfe5b3 solid 2px">
                    <td style="height: 38px;  100px;">
                        &nbsp;用户登录
                    </td>
                    <td>
                        <img src="Images/Button/close.gif" id="closeBtn" align="absmiddle" alt="关闭" title="关闭" />
                    </td>
                </tr>
                <tr>
                    <td colspan="2" style="height: 5px;">
                    </td>
                </tr>
                <tr>
                    <td align="right">
                        &nbsp;用户名:
                    </td>
                    <td>
                        &nbsp;<asp:TextBox ID="txtUserName" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td align="right">
                        &nbsp;&nbsp;&nbsp;&nbsp;码:
                    </td>
                    <td>
                        &nbsp;<asp:TextBox ID="txtPassword" TextMode="Password" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td align="right">
                        &nbsp;验证码:
                    </td>
                    <td>
                        &nbsp;<asp:TextBox ID="txtCode" Style=" 88px;" runat="server"></asp:TextBox>
                        <img src="Code.aspx" id="imgRndCode" style="vertical-align: middle;" onclick="ChangeCode(this);"
                            alt
="验证码" title="看不清,点击图片更换图片" />
                    </td>
                </tr>
                <tr>
                    <td colspan="2" align="center">
                        <onclick="CheckLogin()" id="alogin">&nbsp;</a>
                        <img id="loading" src="Images/Loading/loading04.gif" alt="正在登录" title="正在登录..." />
                        <br />
                        <span id="showMes"></span>
                    </td>
                </tr>
            </table>
        </div>
        <!--登录窗口:End-->

下面最重要的就是jquery代码了

Comm.js

View Code
$(function () {
    var screenwidth, screenheight, mytop, getPosLeft, getPosTop
    screenwidth = $(window).width();
    screenheight = $(window).height();
    //获取滚动条距顶部的偏移
    mytop = $(document).scrollTop();
    //计算弹出层的left
    getPosLeft = screenwidth / 2 - 200;
    //计算弹出层的top
    getPosTop = screenheight / 2 - 150;
    //css定位弹出层
    $("#divLoginWindow").css({ "left": getPosLeft, "top": getPosTop });
    //当浏览器窗口大小改变时
    $(window).resize(function () {
        screenwidth = $(window).width();
        screenheight = $(window).height();
        mytop = $(document).scrollTop();
        getPosLeft = screenwidth / 2 - 200;
        getPosTop = screenheight / 2 - 150;
        $("#divLoginWindow").css({ "left": getPosLeft, "top": getPosTop + mytop });
    });
    //当拉动滚动条时,弹出层跟着移动
    $(window).scroll(function () {
        screenwidth = $(window).width();
        screenheight = $(window).height();
        mytop = $(document).scrollTop();
        getPosLeft = screenwidth / 2 - 200;
        getPosTop = screenheight / 2 - 150;
        $("#divLoginWindow").css({ "left": getPosLeft, "top": getPosTop + mytop });
    });
    //点击链接弹出登录窗口
    $("#popup").click(function () {
        $("#divLoginWindow").fadeIn("slow"); //toggle("slow"); 
        $("#txtUserName").focus();
        //获取页面文档的高度
        var docheight = $(document).height();
        //追加一个层,使背景变灰
        $("body").append("<div id='greybackground'></div>");
        $("#greybackground").css({ "opacity": "0.5", "height": docheight });
        return false;
    });
    //点击关闭按钮
    $("#closeBtn").click(function () {
        $("#divLoginWindow").fadeOut("slow"); ////hide();
        //删除变灰的层
        $("#greybackground").remove();
        return false;
    });
});

//更换验证码图片
function ChangeCode(obj) {
    obj.src = "Code.aspx?" + Math.random();
}

Login.js

View Code
var count = 0;
$(document).ready(function () {
    $("#loading").hide()
});

function CheckLogin() {
    $("#alogin").hide();
    $("#loading").show();
    var txtCode = $("#txtCode");
    var txtName = $("#txtUserName");
    var txtPwd = $("#txtPassword");
    $.ajax({
        url: "CheckLogin.aspx?Code=" + txtCode.val() + "&Name=" + txtName.val() + "&Pwd=" + txtPwd.val(),
        type: "post",
        datatype: "text",
        success: function (returnValue) {
            if (returnValue != "false") {
                $("#popup").hide();
                $("#showMes").hide();
                $("#loginSuccess").html(returnValue + ',您好!');
                $("#divLoginWindow").remove();
                $("#greybackground").remove();
                $("#showMes").hide();
            }
            else {
                count = count + 1;
                $("#loading").hide();
                $("#alogin").show();
                $("#showMes").show();
                $("#showMes").html("<font color=red>登录失败,请检查后重试!(" + count + "次)</font>");
            }
        },
        error: function () {
            alert("通信失败");
        }
    })
}

登录验证结合ajax实现的,比较简单,当然了,遮罩层里的内容可以随意替换的

原文地址:https://www.cnblogs.com/shuang121/p/2539949.html