html
<!-- pdf文件测试 -->
<!doctype html>
<html lang="en">
<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>Document</title>
</head>
<body>
<div>
<iframe id="iframe" class="iframe" src="./test_file.pdf"></iframe>
<div onclick="doPrint()">打印文件</div>
<a href="./test_file.pdf" download="测试文件">下载文件</a>
</div>
</body>
<script>
var printIframe = document.getElementById('iframe');
// 打印
function doPrint() {
printIframe.contentWindow.print();
}
// 调整大小
printIframe.style.height = window.innerHeight + 'px';
printIframe.style.width = window.innerWidth + 'px';
</script>
<style>
* {
box-sizing: border-box;
}
.iframe {
margin: 20px auto;
display: block;
border: none;
padding: 20px 200px;
}
</style>
</html>