标签:os strong io width c div ar size
弹出层透明背景加框的常用样式和结构
.alertMessageBg{
position:fixed;
_position:absolute;
width:100%;
height:100%;
left:0;
top:0;
background:#000;
opacity:0.5;
-moz-opacity:0.5;
filter:alpha(opacity=50);
z-index:97;
display:none;
}
.alertMessageDivBorder{
position:fixed;
_position:absolute;
width:750px;
height:370px;
left:50%;
top:50%;
margin:-185px 0 0 -375px;
background:#000;
filter:alpha(opacity=30);
-moz-opacity:0.3;
opacity:0.3;
z-index:98;
display:none;
}
.alertMessageDiv{
position:fixed;
_position:absolute;
width:730px;
height:350px;
left:50%;
top:50%;
margin:-175px 0 0 -365px;
background:#fff;
z-index:99;
display:none;
font-size:14px;
}
<div class="alertMessageBg"></div>
<div class="alertMessageDivBorder"></div>
<div class="alertMessageDiv"></div>
弹出层背景覆盖整个网页的方法
1.最近突然想起用的css方法
.alertMessageBg{
position:fixed;
_position:absolute;
width:100%;
height:100%;
left:0;
top:0;
background:#000;
opacity:0.5;
-moz-opacity:0.5;
filter:alpha(opacity=50);
z-index:97;
display:none;
}
2.js方法
.alertMessageBg{
position:absolute;
width:100%;
height:100%;
left:0;
top:0;
background:#000;
opacity:0.5;
-moz-opacity:0.5;
filter:alpha(opacity=50);
z-index:97;
display:none;
}
var bgWidth = document.body.clientWidth + ‘px‘,
bgHeight = document.body.clientHeight + ‘px‘,
alertBgNode = $(‘.alertMessageBg‘);
alertBgNode.css({‘width‘:bgWidth,‘height‘:bgHeight});
对比以上两种方法,显然css方法更省事,尤其在不用兼容ie6的现在。哈哈
标签:os strong io width c div ar size
原文地址:http://www.cnblogs.com/mabelstyle/p/3868545.html