帮实现一个简单的效果,送分的 我做的在线考试系统,想实现一个功能,考试页面上有个漂浮DIV,在上面怎样显示倒计时,还要防刷新,可以随滚动条向下移动...要代码,不要理论 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 <script language="javascript">function MM_findObj(n, d) { var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) { d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);} if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n]; for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); if(!x && d.getElementById) x=d.getElementById(n); return x;}function MM_showHideLayers() { //v9.0 var i,p,v,obj,args=MM_showHideLayers.arguments; for (i=0; i<(args.length-2); i+=3) with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2]; if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; } obj.visibility=v; }}function CountDownTime(startDate,endDate){ if ( !IsDate(startDate) ) { return false; } if ( !IsDate(endDate) ) { return false; } if ( endDate < startDate ) { return false } var diff = "距离" var difftime = Math.floor( (endDate.valueOf()-startDate.valueOf())/1000 ); var hours = Math.floor(difftime%(60*60*24)/3600); var minutes = Math.floor((difftime%(60*60*24)-3600*hours)/60); var second = difftime-(60*60*24)*day-3600*hours-60*minutes; diff += day + "天" ; diff += (hours>10?"":"0") + hours + "小时"; diff += (minutes>10?"":"0") + minutes + "分"; diff += (second>10?"":"0") + second + "秒"; return diff;}function IsDate(datetime){ return (datetime instanceof Date ? true : false);}function timer(){ var d1 = new Date(2008,0,1,0,0,0); var d2 = new Date(); document.getElementById("clock").innerText = CountDownTime(d2,d1);} setInterval("timer()",1000);</script><div id="img" style="position:absolute;z-index:100;" onmouseover="pause_resume()" onmouseout="start()"> <span id="clock"></span><iframe src="" style="position:absolute;visibility:inherit; top:0px; left:0px; width:180px; height:65px; z-index:-1;opacity:.0;filter: alpha( opacity=0 ); -moz-opacity: 0;"></iframe></div><script LANGUAGE="JavaScript"> var xPos = 20; var yPos = 10; img.style.left= xPos; img.style.top = yPos; var step = 1; var delay = 30; var width,height,Hoffset,Woffset; var y = 1; var x = 1; var interval; img.visibility = "visible"; function changePos() { width = document.body.clientWidth; height = document.body.clientHeight; Hoffset = img.offsetHeight; Woffset = img.offsetWidth; if (y) { yPos = yPos + step; } else { yPos = yPos - step; } if (yPos < 0) { y = 1; yPos = 0; } if (yPos >= (height - Hoffset)) { y = 0; yPos = (height - Hoffset); } if (x) { xPos = xPos + step; } else { xPos = xPos - step; } if (xPos < 0) { x = 1; xPos = 0; } if (xPos >= (width - Woffset)) { x = 0; xPos = (width - Woffset); } img.style.left = xPos + document.body.scrollLeft; img.style.top = yPos + document.body.scrollTop; } function start() { interval = setInterval('changePos()', delay); } function pause_resume() { clearInterval(interval); } start(); </script> >>> 漂浮DIV, 主要设置 style 中 position 为 absolute,>>> 倒计时,使用 setInterval 或 setTimeout 定时器即可.>>> 还要防刷新 可以试试下面<script language="javascript"> function window.onbeforeunload(){return "*** 提示信息!";}</script>>>> 可以随滚动条向下移动, 可以取scroll属性, 如: scrollTop >>> 要代码,不要理论, sorry, 我认为授人以鱼不如授人以渔. 日历控件的显示 table无法添加新行而ul可以 请问怎么访问控件内的控件呢?我用的FindControl怎么出错了呢。 ====== Web Services 中的安全问题 ====== 生成pdf文件的时候产生中文乱码问题 文件上传的权限问题 一个Web services的问题。 asp.net 中如何重写treeNode添加对象 我现在有一个棘手的任务,希望大家帮忙!!! Crystal Report登陆失败? jquery是不是真的很好用 怎么实现第二层嵌套中,怎么实现第二层中的按钮事件!!
function MM_findObj(n, d) {
var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_showHideLayers() { //v9.0
var i,p,v,obj,args=MM_showHideLayers.arguments;
for (i=0; i<(args.length-2); i+=3)
with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
obj.visibility=v; }
}
function CountDownTime(startDate,endDate)
{
if ( !IsDate(startDate) )
{
return false;
}
if ( !IsDate(endDate) )
{
return false;
}
if ( endDate < startDate )
{
return false
}
var diff = "距离"
var difftime = Math.floor( (endDate.valueOf()-startDate.valueOf())/1000 );
var hours = Math.floor(difftime%(60*60*24)/3600);
var minutes = Math.floor((difftime%(60*60*24)-3600*hours)/60);
var second = difftime-(60*60*24)*day-3600*hours-60*minutes;
diff += day + "天" ;
diff += (hours>10?"":"0") + hours + "小时";
diff += (minutes>10?"":"0") + minutes + "分";
diff += (second>10?"":"0") + second + "秒";
return diff;
}
function IsDate(datetime)
{
return (datetime instanceof Date ? true : false);
}
function timer()
{
var d1 = new Date(2008,0,1,0,0,0);
var d2 = new Date();
document.getElementById("clock").innerText = CountDownTime(d2,d1);
}
setInterval("timer()",1000);
</script><div id="img" style="position:absolute;z-index:100;" onmouseover="pause_resume()" onmouseout="start()">
<span id="clock"></span>
<iframe src="" style="position:absolute;visibility:inherit; top:0px; left:0px; width:180px; height:65px; z-index:-1;opacity:.0;filter: alpha( opacity=0 ); -moz-opacity: 0;"></iframe>
</div><script LANGUAGE="JavaScript">
var xPos = 20;
var yPos = 10;
img.style.left= xPos;
img.style.top = yPos;
var step = 1;
var delay = 30;
var width,height,Hoffset,Woffset;
var y = 1;
var x = 1;
var interval;
img.visibility = "visible"; function changePos()
{
width = document.body.clientWidth;
height = document.body.clientHeight;
Hoffset = img.offsetHeight;
Woffset = img.offsetWidth;
if (y)
{
yPos = yPos + step;
}
else
{
yPos = yPos - step;
}
if (yPos < 0)
{
y = 1;
yPos = 0;
}
if (yPos >= (height - Hoffset))
{
y = 0;
yPos = (height - Hoffset);
}
if (x)
{
xPos = xPos + step;
}
else
{
xPos = xPos - step;
}
if (xPos < 0)
{
x = 1;
xPos = 0;
}
if (xPos >= (width - Woffset))
{
x = 0;
xPos = (width - Woffset);
}
img.style.left = xPos + document.body.scrollLeft;
img.style.top = yPos + document.body.scrollTop;
} function start()
{
interval = setInterval('changePos()', delay);
} function pause_resume()
{
clearInterval(interval);
}
start();
</script>
<script language="javascript">
function window.onbeforeunload()
{
return "*** 提示信息!";
}
</script>>>> 可以随滚动条向下移动, 可以取scroll属性, 如: scrollTop >>> 要代码,不要理论, sorry, 我认为授人以鱼不如授人以渔.