<script type="text/javascript" language="javascript">
//more javascript from http://www.smallrain.net
function sAlert(str){
var msgw,msgh,bordercolor;
msgw=400;//msg width
msgh=100;//msg height
titleheight=25 //msg title height
bordercolor="#c51100";//
titlecolor="#c51100";//
var sWidth,sHeight;
sWidth=screen.width;
sHeight=screen.height; var bgObj=document.createElement("div");
bgObj.setAttribute('id','bgDiv');
bgObj.style.position="absolute";
bgObj.style.top="0";
bgObj.style.background="#cccccc";
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="close";
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>
call :
<input type="button" value="click" onclick="sAlert('test');" />
//more javascript from http://www.smallrain.net
function sAlert(str){
var msgw,msgh,bordercolor;
msgw=400;//msg width
msgh=100;//msg height
titleheight=25 //msg title height
bordercolor="#c51100";//
titlecolor="#c51100";//
var sWidth,sHeight;
sWidth=screen.width;
sHeight=screen.height; var bgObj=document.createElement("div");
bgObj.setAttribute('id','bgDiv');
bgObj.style.position="absolute";
bgObj.style.top="0";
bgObj.style.background="#cccccc";
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="close";
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>
call :
<input type="button" value="click" onclick="sAlert('test');" />
我在一个 页面上设计好了一个div。起初他是隐藏的。那我怎么通过点击这个页面的一个button后,把这个隐藏的div显示并居中,然后显示后把这个页面锁屏效果
能举个简单例子我看下吗?
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>display</title>
<style type="text/css">
.div {width:500px; height:300px; background:green; margin:200px auto;}
</style>
<script type="text/javascript">
function disPlay()
{
var btn = document.getElementById("display");
if (btn) {
var myDiv = document.getElementById("mydiv");
myDiv.style.display="";
btn.style.display="none";
}
}
function dNone()
{
if(document.getElementById("innerbtn"))
{
var btn = document.getElementById("display");
btn.style.display = "";
var myDiv = document.getElementById("mydiv");
myDiv.style.display = "none";
}
}
</script>
</head>
<body>
<input type="button" id="display" onclick="disPlay()" value="onclick" />
<div id="mydiv" class="div" style="display:none;">
<input type="button" id="innerbtn" onclick="dNone()" value="none" />
</div>
</body>
</html>
1.要有设计好的div的引用。
2把div挂到body下。
3.把div display设成“”
4.把div定位到屏幕的中间。5.得到全屏的高和宽,让一个div把屏盖住。网上有例子你可以看看。http://games.sina.com.cn/50sg/
1.要有设计好的div的引用。
2把div挂到body下。
3.把div display设成“”
4.把div定位到屏幕的中间。 5.得到全屏的高和宽,让一个div把屏盖住。 网上有例子你可以看看。 http://games.sina.com.cn/50sg/
然后在最上面放一个登陆层,从而实现遮罩效果 给你一个简介的例子 HTML code<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Demo</title>
<style type="text/css">
<!--
*{
margin:0;
padding:0;
}
html,body{
height:100%;
}
#shadow{
position:absolute;
left:0;
top:0;
width:100%;
height:100%;
background-color:#0060C0;
filter:alpha(opacity=20);
}
#box{
position:absolute;
left:50%;
top:50%;
width:400px;
height:180px;
margin:-90px 0 0 -200px;
border:1px solid #84A0C4;
background-color:#DFE8F6;
text-align:center;
}
-->
</style>
<script language="javascript" type="text/javascript">
<!--
function createDiv()
{
var btnShow = document.getElementById("btnshow");
btnShow.disabled=true; var shadow = document.createElement("div");
shadow.setAttribute("id","shadow");
shadow.style.zIndex="10"; var box=document.createElement("div");
box.setAttribute("id","box");
box.style.zIndex="999";
var spanUser=document.createElement("span");
spanUser.innerHTML="User:"; var textUser=document.createElement("input");
textUser.setAttribute("type","text");
textUser.setAttribute("id","textUser"); var button=document.createElement("input");
button.setAttribute("type","button");
button.setAttribute("id","button1");
button.setAttribute("value","Confirm");
button.onclick=hideDiv; box.appendChild(spanUser);
box.appendChild(textUser);
box.appendChild(button); document.body.appendChild(shadow);
document.body.appendChild(box);
}
function hideDiv()
{
var textUser=document.getElementById("textUser");
var user=document.getElementById("user");
user.value=textUser.value; var box=document.getElementById("box");
var shadow=document.getElementById("shadow");
var btnShow=document.getElementById("btnShow");
document.body.removeChild(box);
document.body.removeChild(shadow);
btnShow.disabled=false;
}
-->
</script>
</head>
<body>
<div style="text-align:center">
<input id="user" type="text" />
<input id="btnshow" type="button" onclick="createDiv()" value="Display" />
</div>
</body>
</html>
其实只是个模拟效果而已
真正要达到锁屏只能用modaldialog具体的例子
这个CSDN回复帖子的登陆页面不就是个例子嘛