Code example analysis of js click button to implement pop-up video effect with mask layer

This article mainly introduces the jsclicking the button to achieve the pop-up video effect with a mask layer. Friends who need it can refer to the

example of this article. js click the button to achieve the pop-up video effect with a mask layer, which involves css and JavaScript. I share it with you for your reference. The specific content is as follows

The final display effect: click the red button, and it will A video screen pops up with a mask layer

Click the yellow area to close the video and return to the original state.

Main code of the page: main mainly contains an a, which controls the displayed button. Set with id value.

<p class="main">
  <a href="javascript:;" class="video" id="video"></a>
</p>

The following code is used to control the display effect of the video. .video-btn includes the video display area and the yellow close button on the right (although the yellow close button is a bit ugly).

id="shadow" is used to control the mask layer. The main thing is to set the id value of each element, and then js can easily call each element.

 <p class="video-btn" id="video-btn">
   <p class="video-area" id="video-area"></p>
   <a class="video-shut" id="video-shut">x</a>
 </p>
 <p id="shadow"></p>

Let’s take a look at the css

First set the video-btn area.

.video-btn{
      position: absolute;
      width:600px;
      height: 300px;
      background:black;
      top:50%;
      left: 50%;
      margin-top: -150px;
      margin-left:-300px;
      display: none;
      z-index: 101;
    }
 .video-area{
      float:left;
      width:500px;
      height: 300px;
      background:red;
    }
.video-shut{
      height:100px;
      width:100px;
      font-size:40px;
      color:pink;
      float:left;
      text-align: center;
      /*line-height: 50px;*/
      background: yellow;
      display: block;
      padding-top:30px;
    }

Then set the css of the mask layer

 #shadow{
      position: absolute;
      opacity: 0.5;
      filter:alpha(opacity=50);
      bottom:0;
      left: 0;
      right: 0;
      top: 0;
      background:black;
      z-index: 100;
      display: none;
    }

Key point 1: Be sure to set the two p's here to Absolute positioning takes it out of the document flow.

Point 2: The mask layer should set the bottom, left, right and top values ​​to 0 so that the mask layer can tile the entire screen.

Point 3: Be sure to set these two p's to display: none. Let the user not see these two p's at the beginning, otherwise it will be ugly to see these two as soon as they enter.

Point 4: To set the z-index value, the priority of the yellow button and the p that displays the video must be greater than the priority of the mask layer. Otherwise you can't click.

Now start js: get the id assignment for the first five. Then respond to the event when the yellow button is clicked.

Click event 1: Set the p where the video is located to display: block. Set the p where the mask layer is located to display: block. At the same time, Tudou video is displayed in the video screen p. This link is the sharing link of Tudou.com.

Click event 2: When clicking the yellow x button, these two p's should be hidden. That is, set the display of two p: none.

<script>
  var obtn=document.getElementById(&#39;video&#39;);
  var ovideo=document.getElementById(&#39;video-btn&#39;);
  var oatn=document.getElementById(&#39;video-area&#39;);
  var oshut=document.getElementById(&#39;video-shut&#39;);
  var oshadow=document.getElementById(&#39;shadow&#39;);
  obtn.onclick=function () {
    ovideo.style.display=&#39;block&#39;;
    oshadow.style.display=&#39;block&#39;;
    oatn.innerHTML=&#39;<embed src="http://www.tudou.com/v/Bs_lZPxcoRs/&
    rpid=818231113&autoPlay=true&resourceId=818231113_04_05_99/v.swf" allowFullScreen="true" 
    quality="high" width="500" height="300" align="middle" allowScriptAccess="always" 
    flashvars ="isAutoPlay=true" type="application/x-shockwave-flash">
    </embed>&#39;;
  }
  oshut.onclick= function () {
    ovideo.style.display=&#39;none&#39;;
    oshadow.style.display=&#39;none&#39;;
  }
</script>