<!DOCTYPE html>
<html>
<head>
<style>
.grid-container { display: grid;
grid: auto / auto auto auto auto;
grid-gap: 10px !important;
background-color: #2196F3;
padding: 10px;
}
.grid-container > div { background-color: rgba(255, 255, 255, 0.8);
text-align: center;
padding: 20px 0;
font-size: 30px;
}
</style>
</head>
<body>
<h1>使用 JavaScript 更改网格属性 grid</h1>
<p>单击按钮将网格布局从四列布局更改为两列布局，其中第一行为 250 像素高：</p>
<p><button onclick="myFunction()">改变布局</button></p>
<div class="grid-container" id="myDIV">
<div class="item1">1</div>
<div class="item2">2</div>
<div class="item3">3</div>
<div class="item4">4</div>
<div class="item5">5</div>
<div class="item6">6</div>
<div class="item7">7</div>
<div class="item8">8</div>
</div>
<script>
function myFunction() { document.getElementById("myDIV").style.grid = "250px / auto auto";}
</script>
<p>注意：grid-gap 属性设置为 !important，否则 javaScript 会在设置 grid 属性时覆盖它。</p>