height不要100vh 或者100%,获取屏幕高度并赋值给iframe
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden; /* 禁用主页面的滚动条 */
}
iframe {
width: 100%;
}
</style>
</head>
<body>
<div class="iframe-container">
<iframe id="myIframe" src="https://www.baidu.com" frameborder="0"></iframe>
</div>
<script>
// 获取当前页面的高度
const currentHeight = document.documentElement.scrollHeight;
// 设置 iframe 的高度
const iframe = document.getElementById('myIframe');
iframe.style.height = `${currentHeight}px`;
</script>
</body>
</html>