html add mask effect-HTML Tutorial-php.cn

html add mask effect

王林

Release： 2020-08-26 16:31:31

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html add mask effect

The div css method is used here. The images being loaded are animations downloaded from the Internet. You can modify them according to your needs.

(Recommended tutorial: html tutorial)

Implementation code:

<!DOCTYPE html>
<html>
<head>
    <title>DIV CSS遮罩层</title>
    <script language="javascript" type="text/javascript">
        function showdiv() {
            document.getElementById("bg").style.display ="block";
            /* document.getElementById("show").style.display ="block";*/
        }
        function hidediv() {
            document.getElementById("bg").style.display =&#39;none&#39;;
            /*document.getElementById("show").style.display =&#39;none&#39;;*/
        }
    </script>
    <style type="text/css">
        #bg{ display: none;  position: absolute;  top: 0%;  left: 0%;  width: 100%;  height: 100%;  background-color: black;  z-index:1001;  -moz-opacity: 0.7;  opacity:.70;  filter: alpha(opacity=70);}
        #show{display: none;  position: absolute;  top: 25%;  left: 22%;  width: 53%;  height: 49%;  padding: 8px;  border: 8px solid #E8E9F7;  background-color: white;  z-index:1002;  overflow: auto;}
        /*遮罩图片居中显示*/
        .zhezhao{
            position: absolute;
            top:50%;
            left: 50%;
            transform: translate(-50%,-50%);
        }
    </style>
</head>
<body>
<input id="btnshow" type="button" value="Show" onclick="showdiv();"/>
<div id="bg">
    <img  class="zhezhao" src="img/timg.gif" alt="html add mask effect" >
</div>    <!-- 遮罩层  -->
<div id="show">测试
    <input id="btnclose" type="button" value="Close" onclick="hidediv();"/>
</div>
</body>
</html>

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Effect:

html add mask effect