改善用户体验之alert提示效果

时间：2007-02-18 来源：PHP爱好者

类似于新浪邮箱的提示效果。比较独立。

使用方法很简单，在需要弹出提示的页面先

<script type="text/javascript" src="alert.js"></script>
然后直接在需要提出处使用：

sAlert("需要提示的信息")
即可完成全部效果。不需要在页面中添加任何其它代码。

提示：您可以先修改部分代码再运行 <!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>
政策文件_中国电力工程造价信息网</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<meta http-equiv="Content-Language" content="gb2312" />
<meta name="KeyWords" content="电力工程造价,价格信息,装材,设备,电力工程" />
<meta name="description" content="电力工程造价信息" />
<style type="text/css">
      *{
         margin:0;padding:0;
      }
</style>
</head>
<body>

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

<p>测试</p><p>测试</p>
<p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p>
<p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p>

<input type="button" value="点击这里" onclick="sAlert('测试效果');" />

</div>
<div class="rightClass">
</div>
</div>
<script type="text/javascript" language="javascript">

//Author:Daviv
//Blog:[url]http://blog.163.com/jxdawei[/url]
//Date:2006-10-27
//Email:[email protected]

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>
提示：您可以先修改部分代码再运行