禁用除DIV元素之外的所有内容

Question

我有一个div元素的视频播放器。我想禁用除DIV之外的所有内容。一种方法是使用灯箱，但我想知道我是否可以使用纯HTML / Javascript来做到这一点。

Answer 1

我为你做了一个简单的例子，

jQuery;

        $(".disable").on('click', function(){
           // * = select All, find Div, Not (#video) and edit css opacity
            $("*").find('div').not("#video").css('opacity', '0.1');

        });

HTML;

   <button class="disable">Disable</button>    
    <div class="header">Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum     has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</div>

<div id="video">
   <img src="http://fandomania.com/wp-content/uploads/2012/04/06/anarchy01.jpg">
 </div>

<div class="footer">Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

Css;

.header{border:1px solid #000;background:#cc0000;color:#fff;}
.footer{border:1px solid #000;background:#cc0000;color:#fff;}

检查FIDDLE

Answer 2

要完全跨浏览器这样做，你需要一个iframe，你可以动态创建。除了视频iframe之外，给z-index一个div高于页面上的任何其他内容，使iframe成为视口/页面的完整大小，然后使视频div更高的z-index。现在，除了视频div上的所有点击都会转到iframe，这可能会忽略它们。如果要“淡化”页面的其余部分，也可以在iframe上使用不透明度。

非常粗略：

function maskAllExcept(div) {
    var iframe = document.createElement('iframe');
    iframe.style.position = "absolute";
    iframe.style.left = iframe.style.right = iframe.style.top = iframe.style.bottom = "0";
    iframe.style.zIndex = 1000;
    div.style.zIndex = 1001;
    document.body.appendChild(iframe);
}

Answer 3

使用Pure CSS禁用除元素及其后代之外的所有内容。让我们用一个常见的HTML dialog来做这个行为可能是必要的（如果你愿意，可以使用div）

我们只需要添加一个类来避免除了我们的body及其后代之外的所有dialog中的指针事件。

body.only-dialog *:not(dialog *) { /* not supported yet */
  pointer-events: none;
}

因为，:not只支持一个简单的选择器，我们必须这样做：

body.only-dialog * {
  pointer-events: none;
}

body.only-dialog dialog * {
  pointer-events: all;
}

https://jsfiddle.net/bmntvLfs/

希望这对后代有所帮助:)

Answer 4

这可能对你有帮助

<table cellpadding="0" cellspacing="0" border="0">
    <tr>
        <td>
            <div id="popup" class="popup">

                <div id="large_map_canvas"  style="width:550px; height:550px;" align="right"><iframe align="center" src="your url for video"  style="width:545px; height:523px; overflow:hidden;"></iframe></div>
            </div>
                <a href="javascript:void(0)" onclick="showPopup();">Click to view larger map </a>
        </td>
    </tr>
</table>

<div id="mainDiv" class="businessDetail-backStyle" style="display:none;"> </div>


<script type="text/javascript"> 

    function showPopup() {
        document.getElementById('popup').style.display = 'block';
        document.getElementById('mainDiv').style.display = 'block';
    }

    function hidePopup(){
        document.getElementById('popup').style.display = 'none';
        document.getElementById('mainDiv').style.display = 'none';
    }

</script>

<style type="text/css">
  .popup {

    position:absolute;
    top:0%;
    left:37%;
    margin:-50px 0 0 -100px; 
    padding:11px;
    display:none;
    background:#FFF;
    z-index:9999;
  }

  .businessDetail-backStyle
  {
background-color:  #333333;
opacity: 90%;
filter:alpha(opacity=90);
background-color: rgba(0,0,0,0.737);
width: 100%;
height: 100%;
position: fixed;
top: 0;
left: 0;
color: white;
z-index:999;

}

    </style>