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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
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
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>
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); }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');}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 "
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