<!DOCTYPE html>
<html>
<head>
<style>
.a { background-color: lightgreen;
}
#b { width: 250px;
height: 250px;
}
.c { width: 100px;
height: 100px;
border: 1px solid black;
padding: 2px;
mix-blend-mode: difference;
}
#d { isolation: auto;
}
</style>
</head>
<body>
<h1>通过 JavaScript 更改 isolation</h1>
<button onclick="myFunction()">试一试</button>
<p>点击“试一试”按钮可更改 div “d” 的 isolation 属性。</p>
<div id="b" class="a">
<div id="d">
<div class="a c">div d</div>
</div>
</div>
<script>
function myFunction() { document.getElementById("d").style.isolation = "isolate";}
</script>
<p><b>注释：</b>Internet Explorer 11 及更早版本不支持 isolation 属性。</p>
</body>
</html>