<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>用div模拟alert对话框</title>
<!-- 为了增加适用性，所有的css样式都写在程序中，调用时只需将selfAlert类引入即可 -->
</head>
<body>
<br><br><center><h3 style="color:blue">用div模拟alert对话框，一段时间不点击，将自动关闭</h3></center>
</body>
<script type="text/javascript">
var s = new selfAlert("3秒钟不点击将自动关闭",3000);
/**
* Descrioption: 模拟alert对话框，一定时间内不点击则自动关闭
* param msgstr: 模拟对话框要显示的字符串
* timer: 自动关闭时间
* ps: 适用于 IE6 IE7 firefox
*/
function selfAlert(msgstr,timer){
//该值可以作为返回值，初始化时为 0 ，点击确定后变为 1 ，点击关闭后变为 2 ，自动关闭 3
var alertValue = 0;
//确定遮罩层的高度，宽度
var h = screen.availHeight;
var w = screen.availWidth;
//创建遮罩层，它的主要作用就是使网页中的其他元素不可用。
var dv = document.createElement("div");
dv.setAttribute('id','bg');
//设置样式
dv.style.height = h + "px";
dv.style.width = w + "px";
dv.style.zIndex = "1111";
dv.style.top = 0;
dv.style.left = 0;
//如果不想遮罩，可以去掉这两句
dv.style.background = "#fff";
dv.style.filter = "alpha(opacity=0)";
//设为绝对定位很重要
dv.style.position = "absolute";
//将该元素添加至body中
document.body.appendChild(dv);
//创建提示对话框面板
var dvMsg = document.createElement("div");
dvMsg.style.position = "absolute";
dvMsg.setAttribute('id','msg');
dvMsg.style.width = "280px";
dvMsg.style.height = "100px";
dvMsg.style.top="30%";
dvMsg.style.left="40%";
dvMsg.style.background = "white";
dvMsg.style.zIndex = "1112";
//可以继续采用如上形式创建模拟对话框表格，这里为了方便采用html形式
strHtml = "<table width='280' height='25' border='0' cellspacing='0' cellpadding='0' align='center'>"
strHtml += " <tr height='25' style='line-height:25px;'>"
strHtml += " <td width='250' title='移动' style='cursor:move;background:#CFD7EC url(title_bg_left.gif) no-repeat top left;' onmousedown='oMove(parentNode.parentNode.parentNode.parentNode);'>"
strHtml += " <font style='font-size:12px;font-weight:bold;color:#000;margin-left:10px;'>消息提示框</font></td>"
strHtml += " <td width='30' style='background:#CFD7EC url(title_bg_right.gif) no-repeat right top;'>"
strHtml += " <img src='close.gif' style='margin-right:3px;cursor:hand;' onclick='imgClose();'><td></tr>"
strHtml += "</table>"
strHtml += "<table width='280' height='145' border='0' cellspacing='0' cellpadding='0' align='center' style='border:1px solid #343434'>"
strHtml += " <tr height='113' bgcolor='#F4F4F4'><td width='' style='padding-left:10;'><img src='info.gif'></td>"
strHtml += " <td width='200' align='left'>" + msgstr + "</td></tr>"
strHtml += " <tr height='27'><td colspan='2' style='background:#F4F4F4;padding-top:0px;' valign='top' align='center'>"
strHtml += " <input type='button' value='确 定' style='width:70;' onclick='btnclick()'></td></tr>"
strHtml += "</table>"
dvMsg.innerHTML = strHtml;
document.body.appendChild(dvMsg);
//点击关闭按钮
imgClose = function (){
alertValue = 2; // 2 代表点击了关闭按钮
document.body.removeChild(dv);
document.body.removeChild(dvMsg);
}
//点击确定按钮
btnclick = function (){
alertValue = 1; // 1 代表点击了确定按钮
document.body.removeChild(dv);
document.body.removeChild(dvMsg);
}
remove = function ()
{
//timer时间过后如果仍未点击，则自动关闭selfAlert框
if(alertValue==0){
document.body.removeChild(dv);
document.body.removeChild(dvMsg);
}
}
//timer秒后自动关闭selfAlert(提示框)
setTimeout("remove()",timer);
//实现鼠标拖动对话框
oMove = function(obj) {
var otop,oleft;
otop = event.y - obj.offsetTop;
oleft = event.x - obj.offsetLeft;
obj.setCapture();
obj.onmousemove = function()
{
obj.style.left = event.x - oleft;
obj.style.top = event.y - otop;
}
obj.onmouseup = function()
{
obj.onmousemove = null;
obj.style.filter = null;
obj.releaseCapture();
}
}
}
</script>
</html>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title></title>
</head>
<body>
<input type="button" value="弹出alert框,一秒后自动关闭;" onClick="JavaScript:myAlert('不点击确定三秒后自动跳转')">
</body>
<script type="text/javascript">
/**
*@Description：弹出一个alert对话框，三秒钟内不点击确定，自动关闭alert框，该框最终模拟成非模态形式
* 经验证，适用于 IE6，不兼容IE7，firefox
*@param： showstr alert框里要显示的文本
*/
function myAlert(showstr)
{
var alertInfo = showstr; //传递alert框里要显示的信息
var timer = 3000; //设定停留的时间为3000ms，即3秒
//在页面中新建一个框架frame，以便在该frame中弹出一个非模态对话框
document.body.innerHTML += "<iframe style='display:none;' width='500' name='ifrtemp'></iframe>";
//在非模态对话框中弹出一个alert框，并立即关闭该非模态对话框
ifrtemp.showModelessDialog("javascript:alert('"+alertInfo+"');window.close();",
"",
"status:no;resizable:no;help:no;dialogHeight:530px;dialogWidth:40px;");
setTimeout("ifrtemp.location.reload();",timer); //停留一段时间后强行关闭alert窗口
}
</script>
</html>
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