我的代码，这种方式形成了遮罩层，遮罩层的"登录"按钮仍可被点击，非我想要的。
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>遮罩画面</title> <script src="jquery-1.11.1.min.js" type="text/javascript" charset="utf-8" async defer></script> <style type="text/css" media="screen"> .mask{ position: absolute; background-color:#3B1AEB; font-size:15px; border-width:2px; border-style:solid; border-color:#1DC4E3; z-index:10; margin-left:100px; } .login{ position: absolute; filter:alpha(opacity=50); /*支持 IE 浏览器*/ -moz-opacity:0.50; /*支持 FireFox 浏览器*/ opacity:0.50; /*支持 Chrome, Opera, Safari 等浏览器*/ /*display: none;*/ z-index:2; } </style> <script type="text/javascript"> function login() { $("#login_input").css("display","block"); // $("#login").css("display","none"); $("#login").addClass('login'); } function clickSubmit() { $("#login_input").css("display","none"); // $("#login").css("display","none"); $("#login").removeClass('login'); } </script> </head> <body> <div id="login"> <a href="#" onclick="javascript:login()">登录</a> </div> <div id="login_input" class="mask" style="display: none"> <label>用户名:<input type="text" name="user" value="h65"></label> <label>密码：<input type="text" name="" value=""></label> <label><input type="checkbox" name="" value="">remember me</label> <p > <input type="submit" name="" value="确定" onclick="clickSubmit()"> </p> </div> </body> </html>
效果图：
网友提供的代码：
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 5 <title>Jquery遮罩层</title> 6 7 <style type="text/css"> 8 #BgDiv{background-color:#e3e3e3; position:absolute; z-index:99; left:0; top:0; display:none; width:100%; height:1000px;opacity:0.5;filter: alpha(opacity=50);-moz-opacity: 0.5;} 9 10 #DialogDiv{position:absolute;width:400px; left:50%; top:50%; margin-left:-200px; height:auto; z-index:100;background-color:#fff; border:1px #8FA4F5 solid; padding:1px;} 11 #DialogDiv h2{ height:25px; font-size:14px; background-color:#8FA4F5; position:relative; padding-left:10px; line-height:25px;} 12 #DialogDiv h2 a{position:absolute; right:5px; font-size:12px; color:#000000} 13 #DialogDiv .form{padding:10px;} 14 15 16 </style> 17 18 <script language="javascript" type="text/javascript" src="http://libs.baidu.com/jquery/1.8.2/jquery.min.js"></script> 19 <script language="javascript" type="text/javascript"> 20 function ShowDIV(thisObjID) { 21 $("#BgDiv").css({ display: "block", height: $(document).height() }); 22 var yscroll = document.documentElement.scrollTop; 23 $("#" + thisObjID ).css("top", "100px"); 24 $("#" + thisObjID ).css("display", "block"); 25 document.documentElement.scrollTop = 0; 26 } 27 28 function closeDiv(thisObjID) { 29 $("#BgDiv").css("display", "none"); 30 $("#" + thisObjID).css("display", "none"); 31 } 32 </script> 33 34 </head> 35 36 <body> 37 <div id="BgDiv"></div> 38 39 <!--遮罩层显示的DIV1--> 40 <div id="DialogDiv" style="display:none"> 41 <h2>弹出层<a href="#" id="btnClose" onclick="closeDiv('DialogDiv')">关闭</a></h2> 42 <div class="form"> <div id="login_input" class="mask" > 43 <label>用户名:<input type="text" name="user" value="h65"></label> 44 <label>密码：<input type="text" name="" value=""></label> 45 <label><input type="checkbox" name="" value="">remember me</label> 46 <p > 47 <input type="submit" name="" value="确定" onclick="clickSubmit()"> 48 </p> 49 </div></div> 50 </div> 51 52 53 <p> 54 <input value="弹出遮罩层1" type="button" id="btnShow1" onclick="ShowDIV('DialogDiv')" /> 55 </p> 56 </body> 57 </html>
效果图：
遮罩层的按钮完全被屏蔽了。点击不了。
个人分析：需要独立的背景层，进行分隔底层与顶层页面。