javascript - 我想在包含 Material 的 div 上添加透明覆盖，我该怎么做？

Question

透明覆盖层是浅灰色的，并且应该包含一个进度条，该进度条会阻止浏览器中覆盖它的 div 的使用，直到进度条完成为止。我也希望在不使用闪光灯的情况下做到这一点。我该怎么做？

 div.transparent_lists
{
 clear:both;
 border-top-style:solid;
 border-bottom-style:solid;
 opacity:0.6;
 filter:alpha(opacity=60);
 border-bottom-color: #A9A9A9;
 border-top-color: #A9A9A9;
 border-bottom-width: thin;
 border-top-width: thin;
 z-index: 1000;
 display: block;
 height: 20px;
 position: absolute;
}  

Answer 1

你可以这样做:

<div id="parent" style="position:relative;height:200px;width:200px;overflow:hidden;">
    Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis at vero eros et accumsan et iusto odio dignissim qui blandit praesent luptatum zzril delenit augue duis dolore te feugait nulla facilisi. Nam
    <div id="overlay" style="position:absolute;top:0px;left:0px;width:200px;height:200px;background-color:#ccc;opacity:.8;padding-top:90px;text-align:center;">
        Content for overlay here
    </div>
</div>

您可以根据需要隐藏/显示覆盖元素。