弹出对话框背景变灰问题

http://js.alixixi.com/a/2010092765156.shtml
打开的时候用小窗口，背景变灰后放大，这样的漏洞怎么去改？

解决方案 »

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【JS最简单的弹出窗口效果】
弹出DIV距中无论你放大缩小。
<!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>
<title>网页中弹出小窗口,页面背景逐渐变为半透明</title>
<style>
html,body{font-size:12px;margin:0px;height:100%;}
.mesWindow{border:#666 1px solid;background:#fff;}
.mesWindowTop{border-bottom:#eee 1px solid;margin-left:4px;padding:3px;font-weight:bold;text-align:left;font-size:12px;}
.mesWindowContent{margin:4px;font-size:12px;}
.mesWindow .close{height:15px;width:28px;border:none;cursor:pointer;text-decoration:underline;background:#fff}
</style>
<script>
var isIe=(document.all)?true:false;
//设置select的可见状态
function setSelectState(state)
{
var objl=document.getElementsByTagName('select');
for(var i=0;i<objl.length;i++)
{
objl[i].style.visibility=state;
}
}
function mousePosition(ev)
{
if(ev.pageX || ev.pageY)
{
return {x:ev.pageX, y:ev.pageY};
}
return {
x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,y:ev.clientY + document.body.scrollTop - document.body.clientTop
};
}
//弹出方法
function showMessageBox(wTitle,content,pos,wWidth)
{
closeWindow();
var bWidth=parseInt(document.documentElement.scrollWidth);
var bHeight=parseInt(document.documentElement.scrollHeight);
if(isIe){
setSelectState('hidden');}
var back=document.createElement("div");
back.id="back";
var styleStr="top:0px;left:0px;position:absolute;background:#666;width:"+bWidth+"px;height:"+bHeight+"px;";
styleStr+=(isIe)?"filter:alpha(opacity=0);":"opacity:0;";
back.style.cssText=styleStr;
document.body.appendChild(back);
showBackground(back,50);
var mesW=document.createElement("div");
mesW.id="mesWindow";
mesW.className="mesWindow";
mesW.innerHTML="<div class='mesWindowTop'><table width='100%' height='100%'><tr><td>"+wTitle+"</td><td style='width:1px;'><input type='button' onclick='closeWindow();' title='关闭窗口' class='close' value='关闭' /></td></tr></table></div><div class='mesWindowContent' id='mesWindowContent'>"+content+"</div><div class='mesWindowBottom'></div>";
styleStr="left:"+(((pos.x-wWidth)>0)?(pos.x-wWidth):pos.x)+"px;top:"+(pos.y)+"px;position:absolute;width:"+wWidth+"px;";
mesW.style.cssText=styleStr;
document.body.appendChild(mesW);
}
//让背景渐渐变暗
function showBackground(obj,endInt)
{
if(isIe)
{
obj.filters.alpha.opacity+=5;
if(obj.filters.alpha.opacity<endInt)
{
setTimeout(function(){showBackground(obj,endInt)},5);
}
}else{
var al=parseFloat(obj.style.opacity);al+=0.01;
obj.style.opacity=al;
if(al<(endInt/100))
{setTimeout(function(){showBackground(obj,endInt)},5);}
}
}
//关闭窗口
function closeWindow()
{
if(document.getElementById('back')!=null)
{
document.getElementById('back').parentNode.removeChild(document.getElementById('back'));
}
if(document.getElementById('mesWindow')!=null)
{
document.getElementById('mesWindow').parentNode.removeChild(document.getElementById('mesWindow'));
}
if(isIe){
setSelectState('');}
}
//测试弹出
function testMessageBox(ev)
{
var objPos = mousePosition(ev);
messContent="<div style='padding:20px 0 20px 0;text-align:center'>消息正文</div>";
showMessageBox('窗口标题',messContent,objPos,500);
}
</script>
</head>
<body>
<div style="padding-top:20%">
<div style="text-align:center";><a href="#none" onclick="testMessageBox(event);">弹出窗口</a></div>
</div>
</body>
</html>
用小窗口打开。背景变暗后，最大化，就能看出来了。之前的超链接好像不是那个效果。搞错了不好意思。
<!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>
<title>网页中弹出小窗口,页面背景逐渐变为半透明</title>
<style>
html,body{font-size:12px;margin:0px;height:100%;}
.mesWindow{border:#666 1px solid;background:#fff;}
.mesWindowTop{border-bottom:#eee 1px solid;margin-left:4px;padding:3px;font-weight:bold;text-align:left;font-size:12px;}
.mesWindowContent{margin:4px;font-size:12px;}
.mesWindow .close{height:15px;width:28px;border:none;cursor:pointer;text-decoration:underline;background:#fff}
</style>
<script>
var isIe=(document.all)?true:false;
//设置select的可见状态
function setSelectState(state)
{
var objl=document.getElementsByTagName('select');
for(var i=0;i<objl.length;i++)
{
objl[i].style.visibility=state;
}
}
function mousePosition(ev)
{
if(ev.pageX || ev.pageY)
{
return {x:ev.pageX, y:ev.pageY};
}
return {
x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,y:ev.clientY + document.body.scrollTop - document.body.clientTop
};
}
//弹出方法
function showMessageBox(wTitle,content,pos,wWidth)
{
closeWindow();
var bWidth=parseInt(document.documentElement.scrollWidth);
var bHeight=parseInt(document.documentElement.scrollHeight);
if(isIe){
setSelectState('hidden');}
var back=document.createElement("div");
back.id="back";
var styleStr="top:0px;left:0px;position:absolute;background:#666;width:"+bWidth+"px;height:"+bHeight+"px;";
styleStr+=(isIe)?"filter:alpha(opacity=0);":"opacity:0;";
back.style.cssText=styleStr;
document.body.appendChild(back);
showBackground(back,50);
var mesW=document.createElement("div");
mesW.id="mesWindow";
mesW.className="mesWindow";
mesW.innerHTML="<div class='mesWindowTop'><table width='100%' height='100%'><tr><td>"+wTitle+"</td><td style='width:1px;'><input type='button' onclick='closeWindow();' title='关闭窗口' class='close' value='关闭' /></td></tr></table></div><div class='mesWindowContent' id='mesWindowContent'>"+content+"</div><div class='mesWindowBottom'></div>";
styleStr="left:"+(((pos.x-wWidth)>0)?(pos.x-wWidth):pos.x)+"px;top:"+(pos.y)+"px;position:absolute;width:"+wWidth+"px;";
mesW.style.cssText=styleStr;
document.body.appendChild(mesW);
}
//让背景渐渐变暗
function showBackground(obj,endInt)
{
if(isIe)
{
obj.filters.alpha.opacity+=5;
if(obj.filters.alpha.opacity<endInt)
{
setTimeout(function(){showBackground(obj,endInt)},5);
}
}else{
var al=parseFloat(obj.style.opacity);al+=0.01;
obj.style.opacity=al;
if(al<(endInt/100))
{setTimeout(function(){showBackground(obj,endInt)},5);}
}
}
//关闭窗口
function closeWindow()
{
if(document.getElementById('back')!=null)
{
document.getElementById('back').parentNode.removeChild(document.getElementById('back'));
}
if(document.getElementById('mesWindow')!=null)
{
document.getElementById('mesWindow').parentNode.removeChild(document.getElementById('mesWindow'));
}
if(isIe){
setSelectState('');}
}
//调整窗口大小
function resizeWindow(ev)
{
testMessageBox(ev);
}
//测试弹出
function testMessageBox(ev)
{
var objPos = mousePosition(ev);
messContent="<div style='padding:20px 0 20px 0;text-align:center'>消息正文</div>";
showMessageBox('窗口标题',messContent,objPos,500);
}
</script>
</head>
<body onresize="resizeWindow(event)">
<div style="padding-top:20%">
<div style="text-align:center";><a href="#none" onclick="testMessageBox(event);">弹出窗口</a></div>
</div>
</body>
</html>
给body加个监听onresize事件，调整窗口大小就行了
这个就简单改了下
<!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>
<title>网页中弹出小窗口,页面背景逐渐变为半透明</title>
<style>
html,body{font-size:12px;margin:0px;height:100%;}
.mesWindow{border:#666 1px solid;background:#fff;}
.mesWindowTop{border-bottom:#eee 1px solid;margin-left:4px;padding:3px;font-weight:bold;text-align:left;font-size:12px;}
.mesWindowContent{margin:4px;font-size:12px;}
.mesWindow .close{height:15px;width:28px;border:none;cursor:pointer;text-decoration:underline;background:#fff}
</style>
<script>
var isIe=(document.all)?true:false;
//设置select的可见状态
function setSelectState(state)
{
var objl=document.getElementsByTagName('select');
for(var i=0;i<objl.length;i++)
{
objl[i].style.visibility=state;
}
}
function mousePosition(ev)
{
if(ev.pageX || ev.pageY)
{
return {x:ev.pageX, y:ev.pageY};
}
return {
x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,y:ev.clientY + document.body.scrollTop - document.body.clientTop
};
}
//弹出方法
function showMessageBox(wTitle,content,pos,wWidth)
{
closeWindow();
var bWidth=parseInt(document.documentElement.scrollWidth);
var bHeight=parseInt(document.documentElement.scrollHeight);
if(isIe){
setSelectState('hidden');}
var back=document.createElement("div");
back.id="back";
var styleStr="top:0px;left:0px;position:absolute;background:#666;width:"+bWidth+"px;height:"+bHeight+"px;";
styleStr+=(isIe)?"filter:alpha(opacity=0);":"opacity:0;";
back.style.cssText=styleStr;
document.body.appendChild(back);
showBackground(back,50);
var mesW=document.createElement("div");
mesW.id="mesWindow";
mesW.className="mesWindow";
mesW.innerHTML="<div class='mesWindowTop'><table width='100%' height='100%'><tr><td>"+wTitle+"</td><td style='width:1px;'><input type='button' onclick='closeWindow();' title='关闭窗口' class='close' value='关闭' /></td></tr></table></div><div class='mesWindowContent' id='mesWindowContent'>"+content+"</div><div class='mesWindowBottom'></div>";
styleStr="left:"+(((pos.x-wWidth)>0)?(pos.x-wWidth):pos.x)+"px;top:"+(pos.y)+"px;position:absolute;width:"+wWidth+"px;";
mesW.style.cssText=styleStr;
document.body.appendChild(mesW);
}
//让背景渐渐变暗
function showBackground(obj,endInt)
{
if(isIe)
{
obj.filters.alpha.opacity+=5;
if(obj.filters.alpha.opacity<endInt)
{
setTimeout(function(){showBackground(obj,endInt)},5);
}
}else{
var al=parseFloat(obj.style.opacity);al+=0.01;
obj.style.opacity=al;
if(al<(endInt/100))
{setTimeout(function(){showBackground(obj,endInt)},5);}
}
}
//关闭窗口
function closeWindow()
{
if(document.getElementById('back')!=null)
{
document.getElementById('back').parentNode.removeChild(document.getElementById('back'));
}
if(document.getElementById('mesWindow')!=null)
{
document.getElementById('mesWindow').parentNode.removeChild(document.getElementById('mesWindow'));
}
if(isIe){
setSelectState('');}
}
//调整窗口大小
function resizeWindow(ev)
{
testMessageBox(ev);
}
//测试弹出
function testMessageBox(ev)
{
var objPos = mousePosition(ev);
messContent="<div style='padding:20px 0 20px 0;text-align:center'>消息正文</div>";
showMessageBox('窗口标题',messContent,objPos,500);
}
</script>
</head>
<body onresize="resizeWindow(event)">
<div style="padding-top:20%">
<div style="text-align:center";><a href="#none" onclick="testMessageBox(event);">弹出窗口</a></div>
</div>
</body>
</html>
在我的基础上加了你的透明背景。。<!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" />
<title>JS最简单的弹出窗口效果http://www.ok22.org</title>
<style type="text/css">
html,body{font-size:12px;margin:0px;height:100%;}
#BOX_overlay {background:#666;left:0;position:absolute;top:0;z-index:100;}/**遮罩层的样式**/
#layer_box {background:#fff;border:3px solid #000;position:absolute;display:none;z-index:999;width:600px;} /**弹出窗口的样式**/
.box_title {background:#FFF;border-bottom:1px solid #DDD;margin:10px 10px 0;padding:0 0 5px 20px;} /**关闭栏目**/
.box_title span {font-size:14px;font-weight:bold;}
.box_title a {color:#000;position:absolute;right:10px;top:10px;}
.box_content{padding:10px;margin:10px;}
</style>
<script>
function BOX_show(e,a)//显示
{
    if (document.getElementById(e) == null) {
        return;
    }

    if (!a) {
        var selects = document.getElementsByTagName('select');
        for (i = 0; i < selects.length; i++) {
            selects[i].style.visibility = "hidden";
        }
    }    BOX_layout(e);
    window.onresize = function() { BOX_layout(e); } //改变窗体重新调整位置
    window.onscroll = function() { BOX_layout(e); } //滚动窗体重新调整位置
    document.onkeyup = function(event) {
        var evt = window.event || event;
        var code = evt.keyCode ? evt.keyCode : evt.which;
        //alert(code);        if (code == 27) {
            BOX_remove(e);
        }
    }
}
function BOX_remove(e)//移除
{
    window.onscroll = null;
    window.onresize = null;
    document.getElementById('BOX_overlay').style.display = "none";
    document.getElementById(e).style.display = "none";    var selects = document.getElementsByTagName('select');
    for (i = 0; i < selects.length; i++) {
        selects[i].style.visibility = "visible";
    }
}function BOX_layout(e)//调整位置
{
    var a = document.getElementById(e);    if (document.getElementById('BOX_overlay') == null)//判断是否新建遮掩层
    {        var overlay = document.createElement("div");
        overlay.setAttribute('id', 'BOX_overlay');
        //overlay.onclick=function(){BOX_remove(e);};
        //a.parentNode.appendChild(overlay);
        document.body.appendChild(overlay);
    }
document.getElementById('BOX_overlay').style.cssText="filter:alpha(opacity=0);-moz-opacity:0;opacity:0;"
showBackground(document.getElementById('BOX_overlay'),50)
    document.getElementById('BOX_overlay').ondblclick = function() { BOX_remove(e); };
    //取客户端左上坐标，宽，高
    var scrollLeft = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);
    var scrollTop = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);    var clientWidth;
    if (window.innerWidth) {
        clientWidth = window.innerWidth;
        //clientWidth = ((Sys.Browser.agent === Sys.Browser.Safari) ? window.innerWidth : Math.min(window.innerWidth, document.documentElement.clientWidth));
    }
    else {
        clientWidth = document.documentElement.clientWidth;
    }    var clientHeight;
    if (window.innerHeight) {
        clientHeight = window.innerHeight;
        //clientHeight = ((Sys.Browser.agent === Sys.Browser.Safari) ? window.innerHeight : Math.min(window.innerHeight, document.documentElement.clientHeight));
    }
    else {
        clientHeight = document.documentElement.clientHeight;
    }    var bo = document.getElementById('BOX_overlay');
    bo.style.left = scrollLeft + 'px';
    bo.style.top = scrollTop + 'px';
    bo.style.width ='100%';
    bo.style.height = clientHeight + 'px';
    bo.style.display ="";    //Popup窗口定位
    a.style.display = 'block'
    a.style.left = scrollLeft + ((clientWidth - a.offsetWidth) / 2) + 'px';
    a.style.top = scrollTop + ((clientHeight - a.offsetHeight) / 2) + 'px';
}
function showBackground(obj,endInt)
{
var isIe=(document.all)?true:false;
if(isIe)
{
obj.filters.alpha.opacity+=2;
if(obj.filters.alpha.opacity<endInt)
{
setTimeout(function(){showBackground(obj,endInt)},5);
//alert(obj.filters.alpha.opacity);
}
}else
{
var al=parseFloat(obj.style.opacity);al+=0.01;
obj.style.opacity=al;
if(al<(endInt/100))
{setTimeout(function(){showBackground(obj,endInt)},5);}
}
}
</script>
</head><body>
<a href="javascript:BOX_show('layer_box');">点击弹出窗口</a>
<div id="layer_box">
    <div class="box_title"><span>弹出窗口标题</span><a onclick="BOX_remove('layer_box')" href="javascript:void(0)">关闭</a></div>
    <div class="box_content">弹出窗口内容</div>
</div>
</body>
</html>
body里面加了个：onresize="resizeWindow(event)"    没用啊...
resizeWindow函数你加了吗？我在chrome下测试是可以的
我只是给你提供思路，在resizeWindow中检测窗口是否弹出，如果弹出了获取窗口的节点，更改它的大小，那段代码我是为了快速看到效果随便写的
你那段代码很乱，我修改了一些细节，你慢慢体会一下吧
<!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>
<title>网页中弹出小窗口,页面背景逐渐变为半透明</title>
<style>
html,body{font-size:12px;margin:0px;height:100%;}
.mesWindow{border:#666 1px solid;background:#fff;}
.mesWindowTop{border-bottom:#eee 1px solid;margin-left:4px;padding:3px;font-weight:bold;text-align:left;font-size:12px;}
.mesWindowContent{margin:4px;font-size:12px;}
.mesWindow .close{height:15px;width:28px;border:none;cursor:pointer;text-decoration:underline;background:#fff}
</style>
<script>
var isIe=(document.all)?true:false;
//设置select的可见状态
function setSelectState(state)
{
var objl=document.getElementsByTagName('select');
for(var i=0;i<objl.length;i++)
{
objl[i].style.visibility=state;
}
}
function mousePosition(ev)
{
if(ev.pageX || ev.pageY)
{
return {x:ev.pageX, y:ev.pageY};
}
return {
x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,y:ev.clientY + document.body.scrollTop - document.body.clientTop
};
}
//弹出方法
function showMessageBox(wTitle,content,pos,wWidth,wHeight)
{
closeWindow();
var bWidth=parseInt(document.documentElement.scrollWidth);
var bHeight=parseInt(document.documentElement.scrollHeight);
if(isIe){
setSelectState('hidden');}
var back=document.createElement("div");
back.id="back";
var styleStr="top:0px;left:0px;position:absolute;background:#666;width:"+bWidth+"px;height:"+bHeight+"px;";
styleStr+=(isIe)?"filter:alpha(opacity=0);":"opacity:0;";
back.style.cssText=styleStr;
document.body.appendChild(back);
showBackground(back,50);
var mesW=document.createElement("div");
mesW.id="mesWindow";
mesW.className="mesWindow";
mesW.innerHTML="<div class='mesWindowTop'><table width='100%' height='100%'><tr><td>"+wTitle+"</td><td style='width:1px;'><input type='button' onclick='closeWindow();' title='关闭窗口' class='close' value='关闭' /></td></tr></table></div><div class='mesWindowContent' id='mesWindowContent'>"+content+"</div><div class='mesWindowBottom'></div>";
styleStr="left:"+((bWidth - wWidth) / 2)+"px;top:"+((bHeight - wHeight) / 2)+"px;position:absolute;width:"+wWidth+"px;height:" + wHeight + "px;";
mesW.style.cssText=styleStr;
document.body.appendChild(mesW);
}
//让背景渐渐变暗
function showBackground(obj,endInt)
{
if(isIe)
{
obj.filters.alpha.opacity+=5;
if(obj.filters.alpha.opacity<endInt)
{
setTimeout(function(){showBackground(obj,endInt)},5);
}
}else{
var al=parseFloat(obj.style.opacity);al+=0.01;
obj.style.opacity=al;
if(al<(endInt/100))
{setTimeout(function(){showBackground(obj,endInt)},5);}
}
}
//关闭窗口
function closeWindow()
{
if(document.getElementById('back')!=null)
{
document.getElementById('back').parentNode.removeChild(document.getElementById('back'));
}
if(document.getElementById('mesWindow')!=null)
{
document.getElementById('mesWindow').parentNode.removeChild(document.getElementById('mesWindow'));
}
if(isIe){
setSelectState('');}
}
//调整窗口大小
function resizeWindow(ev)
{
    if(document.getElementById('back'))
{
var wWidth = 500;
var wHeight = 100;
var bWidth = parseInt(document.documentElement.scrollWidth);
var bHeight = parseInt(document.documentElement.scrollHeight);
var back = document.getElementById('back');
back.style.width = bWidth + "px";
back.style.height = bHeight + "px";
var mesW = document.getElementById('mesWindow');
mesW.style.left = ((bWidth - wWidth) / 2) + "px";
mesW.style.top = ((bHeight - wHeight) / 2) + "px";
}
}
//测试弹出
function testMessageBox(ev)
{
var objPos = mousePosition(ev);
messContent="<div style='padding:20px 0 20px 0;text-align:center'>消息正文</div>";
showMessageBox('窗口标题',messContent,objPos,500, 100);
}
</script>
</head>
<body onresize="resizeWindow(event)">
<div style="padding-top:20%">
<div style="text-align:center";><a href="#none" onclick="testMessageBox(event);">弹出窗口</a></div>
</div>
</body>
</html>