<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>使用js</title>
<link rel="stylesheet" href="./css/app.css">
</head>
<body>
<div class="container">
<div class="menu">
<div class="import-box">
加载中......
</div>
</div>
<div class="context">
<span>主页内容区</span>
</div>
</div>
<script>
fetch("./Import.html")
.then(response=> response.text())
.then(text=> document.getElementsByClassName("import-box")[0].innerHTML = text);
</script>
</body>
</html>