简单 JS 弹出层背景变暗

2022-06-03 22:04:48
<!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" xml:lang="zh-CN" lang="zh-CN">

<head>

<meta name="verify-v1" content="P4T6fFCiPVxqMWZ2eztyXVzMHlnwD0wLQOq6LBHN5Y8=" />

<title>JS实现Alert弹出层 背景变暗丨芯晴网页特效丨CsrCode.Cn</title>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />

<style type="text/css">

    *{

       margin:0;padding:0;

   }

</style>

</head>

<body>

<div class="cecmbody" id="cecmpolicy">

<div class="leftClass">

<p>点击下面按钮预览</p>

<input type="button" value="点击这里" onclick="sAlert('欢迎光临：芯晴网页特效丨www.CsrCode.cn');" />

  </div>

  <div class="rightClass">

  </div>

 </div>

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

//Author:Daviv

//Blog:http://blog.163.com/jxdawei

//Date:2006-10-27

//Email:jxdawei@gmail.com

   function sAlert(str){

   var msgw,msgh,bordercolor;

   msgw=400;//提示窗口的宽度

   msgh=100;//提示窗口的高度

   titleheight=25 //提示窗口标题高度

   bordercolor="#336699";//提示窗口的边框颜色

   titlecolor="#99CCFF";//提示窗口的标题颜色

   var sWidth,sHeight;

   sWidth=document.body.offsetWidth;

   sHeight=screen.height;

   var bgObj=document.createElement("div");

   bgObj.setAttribute('id','bgDiv');

   bgObj.style.position="absolute";

   bgObj.style.top="0";

   bgObj.style.background="#777";

   bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75";

   bgObj.style.opacity="0.6";

   bgObj.style.left="0";

   bgObj.style.width=sWidth + "px";

   bgObj.style.height=sHeight + "px";

   bgObj.style.zIndex = "10000";

   document.body.appendChild(bgObj);

   var msgObj=document.createElement("div")

   msgObj.setAttribute("id","msgDiv");

   msgObj.setAttribute("align","center");

   msgObj.style.background="white";

   msgObj.style.border="1px solid " + bordercolor;

      msgObj.style.position = "absolute";

            msgObj.style.left = "50%";

            msgObj.style.top = "50%";

            msgObj.style.font="12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif";

            msgObj.style.marginLeft = "-225px" ;

            msgObj.style.marginTop = -75+document.documentElement.scrollTop+"px";

            msgObj.style.width = msgw + "px";

            msgObj.style.height =msgh + "px";

            msgObj.style.textAlign = "center";

            msgObj.style.lineHeight ="25px";

            msgObj.style.zIndex = "10001";

     var title=document.createElement("h4");

     title.setAttribute("id","msgTitle");

     title.setAttribute("align","right");

     title.style.margin="0";

     title.style.padding="3px";

     title.style.background=bordercolor;

     title.style.filter="progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);";

     title.style.opacity="0.75";

     title.style.border="1px solid " + bordercolor;

     title.style.height="18px";

     title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif";

     title.style.color="white";

     title.style.cursor="pointer";

     title.innerHTML="关闭";

     title.onclick=function(){

          document.body.removeChild(bgObj);

                document.getElementById("msgDiv").removeChild(title);

                document.body.removeChild(msgObj);

                }

     document.body.appendChild(msgObj);

     document.getElementById("msgDiv").appendChild(title);

     var txt=document.createElement("p");

     txt.style.margin="1em 0"

     txt.setAttribute("id","msgTxt");

     txt.innerHTML=str;

           document.getElementById("msgDiv").appendChild(txt);

            }

  </script>

 </body>

</html>

<br><br><hr><p align="center"><font color=black>本特效由 <a href="http://www.CsrCode.cn" target="_blank">芯晴网页特效</a>丨CsrCode.Cn 收集于互联网，只为兴趣与学习交流，不作商业用途。来源：源码爱好者</font></p>
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