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Javascript 中的 javascript 遮照层效果

出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-10-10 浏览: 174 ::

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javascript 弹出层居中效果的制作 Javascript createElement和innerHTML增加页面元素的性能对比

遮照层效果实现代码。想了想,还是发出来吧.虽然面向对象还不是很明白.

点击运行可以看到效果:

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]

还可以把上篇文章的弹出层居中效果的制作和本例一起加个

点击运行可以看到效果:

<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<meta name="author" content="Stri" />
<title></title>
<style type="text/css">
* { padding:0; margin:0; list-style:none; }
#a { width:380px; height:80px; border:5px solid #d3d3d3; background-color:#f7f7f7; position:absolute; padding:10px; z-index:999999; }
a.btn { display:block; width:80px; cursor:pointer; background-color:#f7f7f7; padding:2px 0px; border:1px solid #d5d5d5; vertical-align:middle; text-align:center; margin:50px auto 5px; text-decoration:none; }
a:hover { background-color:#333; color:#fff; font-weight:bold; }
html { height:100%; }
body { font-family:Verdana, Geneva, sans-serif; font-size:14px; height:100%; line-height:26px; }
#wrap { width:960px; margin:0 auto; height:auto; }
#divId_no_click { position:absolute; display:none; top:0; left:0; width: 100%; height:100%; background-color: #555; z-index: 9999; filter: alpha(opacity=10); opacity:0.3; }
#aa { position:fixed; bottom:20px; right:10px; }
</style>
<script language="javascript" type="text/javascript">
var drg=true;
var ns=(document.all) ? false : true;
function divcenter()
{remove();
var c=document.createElement("div");
document.body.appendChild(c);
c.setAttribute("id","a"); c.setAttribute("dragable","dragable"); c.onmousedown=foo; var divId=document.getElementById("a"); divId.innerHTML+="出现代码异常!<br>错误编号:0015;";
//divId.style.left=(document.documentElement.clientWidth-divId.clientWidth)/2+document.documentElement.scrollLeft+"px";
//setTimeout(function(){divId.style.top=(document.documentElement.clientHeight-divId.clientHeight)/2+document.documentElement.scrollTop-50+"px";},100);
h_w(300,80);
}
//移除
function remove(){ if(document.getElementById("a")) {document.body.removeChild(document.getElementById("a")); }}
function foo(){ if(drg){ if(document.getElementById("a")!=null) { obj=document.getElementById("a"); document.onmousedown=m_d; document.onmouseup=m_u; } } else { document.onmousemove=no_f; document.onmousedown=no_f; document.onmouseup=no_f; }
}
function m_d(e){ document.onmousemove=m_m; x=(ns)?e.pageX:event.x; y=(ns)?e.pageY:event.y; cx=obj.offsetLeft-x; cy=obj.offsetTop-y; }
function m_m(e){ drg=false; x=(ns)?e.pageX:event.x; y=(ns)?e.pageY:event.y; obj.style.left=(cx+x)+"px"; obj.style.top=(cy+y)+"px"; }
function m_u(){ drg=true; document.onmousedown=no_f; document.onmousemove=no_f; document.onmouseup=no_f; }
function no_f(){ return false;} function h_w(a,b){ divId=document.getElementById("a"); divId.style.width="0px"; divId.style.height="0px"; var s=function(){ var w=parseInt(divId.style.width); if(w<a){ divId.style.width=w+Math.ceil((a-w)/20)+"px"; divId.style.left=(document.documentElement.clientWidth-divId.clientWidth)/2+document.documentElement.scrollLeft+"px";} else {clearInterval(st); divId.style.width=a+"px";} } var t=function(){ var h=parseInt(divId.style.height); if(h<b){ divId.style.height=h+Math.ceil((b-h)/10)+"px"; divId.style.top=(document.documentElement.clientHeight-divId.clientHeight)/2+document.documentElement.scrollTop-10+"px";} else {clearInterval(tt); divId.style.height=b+"px";} } var st = window.setInterval(s,1); var tt=window.setInterval(t,1);
}
</script>
</head>
<body>
<div id="divId_no_click"></div>
<div id="wrap"><a href="javascript:void(0);" id="aa">提交</a></div>
<script type="text/javascript">
function $(id) {
return document.getElementById(id);
}
var Class = {
min_w:960,
bint: function(r) {
$(r).style.display = "block";
$(r).style.height =Math.max(parseInt(document.documentElement.scrollHeight),parseInt(document.documentElement.offsetHeight))+ "px"; $(r).style.width = Math.max(parseInt(document.body.offsetWidth),Class.min_w)+"px";
},
x: function(r,d) {
for (i = 1; i < r; i++) {
var c = document.createElement("div");
c.innerHTML = i;
$(d).appendChild(c);
}
},
res: function(r,wr) {
$(r).style.width = Math.max(parseInt(document.body.offsetWidth),Class.min_w)+"px"; $(r).style.height =Math.max(parseInt(document.documentElement.scrollHeight),parseInt(document.documentElement.offsetHeight))+ "px";
}
};
$("aa").onclick = function() { divcenter();
Class.bint("divId_no_click");
}
window.onresize = function() {
Class.res("divId_no_click","wrap");
}
Class.x(100,"wrap");
</script>
</body>
</html>

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]

主要代码:

复制代码代码如下:

var Class = { 
min_w:960, 
bint: function(r) { 
$(r).style.display = "block"; 
$(r).style.height =Math.max(parseInt(document.documentElement.scrollHeight),parseInt(document.documentElement.offsetHeight))+ "px"; 
$(r).style.width = Math.max(parseInt(document.body.offsetWidth),Class.min_w)+"px"; 
}, 
x: function(r,d) { 
for (i = 1; i < r; i++) { 
var c = document.createElement("div"); 
c.innerHTML = i; 
$(d).appendChild(c); 
} 
}, 
res: function(r,wr) { 
$(r).style.width = Math.max(parseInt(document.body.offsetWidth),Class.min_w)+"px"; 
$(r).style.height =Math.max(parseInt(document.documentElement.scrollHeight),parseInt(document.documentElement.offsetHeight))+ "px"; 
} 
};

javascript 弹出层居中效果的制作 Javascript createElement和innerHTML增加页面元素的性能对比

Javascript 中的 javascript 遮照层效果

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