Please help Baidu know that after clicking on the page to log in, you can still see the covered page after the gray shadow appears in the background_html/css

Please help Baidu know that after clicking on the page to log in, you can still see the covered page after the gray shadow appears in the background_html/css_WEB-ITnose

WBOY

Release： 2016-06-24 12:12:03

Original

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I wonder if it is possible to solve the problem under css and js??

<!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>无标题文档</title><style>body{    margin: 0px;    padding: 0px;}#box{    margin-top: 500px;    margin-left: 200px;}#top{    margin-top: 100px;    margin-left: 300px;}#bottom{    margin-top: 1240px;    margin-left: 300px;}#sig{    height: 20px;    width: 90px;    margin-left: 100px;    margin-top: 100px;    background-color: #0066FF;    font-weight: bold;    color: #FFFFFF;}#ajax{    background-color: #CCCCCC;    position: absolute;    z-index: 9999;    left: 0px;    top: 0px;    right: 0px;    bottom: 0px;}</style></head><body><div onclick="ec()" id="sig">点击注册</div><div id="top">求这能看到(要求灰色背景在的前提下)</div><div id="box">求这能看到(要求灰色背景在的前提下)</div><div id="bottom">求这也能看到</div></body><script>function $(x){ return document.getElementById(x);}function ec() {if($('ajax')){$('ajax').parentNode.removeChild($('ajax'));}  var div = document.createElement("div")  div.setAttribute("id", "ajax");  div.style.height =document.body.clientHeight+"px"; //定位  div.style.width =document.body.clientWidth+"px";  document.body.appendChild(div);  $('ajax').innerHTML="<b>aaaaaaaaaaaaaaaa </b>"  }</script></html>

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Reply to the discussion (solution)

Method 1.
Using
opacity
filter
does have a masking effect, that is, the button click on the page cannot trigger
. The problem is that the text on the mask layer will also have a transparent effect.

#ajax{    background-color: #CCCCCC;    position: absolute;    z-index: 9999;    left: 0px;    top: 0px;    right: 0px;    bottom: 0px;	opacity:.4;	filter:alpha(opacity=40);	}

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Method 2
Use rgba gradient filter
Under IE, the mask is unsuccessful, the button can trigger the event
but the text is not affected to be transparent .

#ajax{    background-color: #CCCCCC;    position: absolute;    z-index: 9999;    left: 0px;    top: 0px;    right: 0px;    bottom: 0px;	background-color:rgba(0,0,0,.4);	filter:progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr='#4c000000', EndColorStr='#4c000000');}

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You can do it with two layers.
Get a background mask layer, set it to transparent, and then get a content layer to show the specific content. .

div.style.height =document.body.clientHeight "px"; //Positioning
div.style.width =document.body.clientWidth "px" ;

div.style.filter = "alpha(opacity=50)"; //IE
div.style.opacity = ".50"; //chromeium

document. body.appendChild(div);
$('ajax').innerHTML="aaaaaaaaaaaaaaa "