Add the following code to html
<div style="display:none">
<div id="to_print"></div>
<input type="button" id="print_button" value="Print" onclick="document.getElementById('FILEtoPrint').focus(); document.getElementById('FILEtoPrint').contentWindow.print();" />
</div>
<script>
function printSome(path){ //传入文件路径
$("#to_print").html('<iframe src='+path+' id="FILEtoPrint"></iframe>');
setTimeout(function(){$("#print_button").click();}, 500);
}
</script>Just add a button to the web interface and call js
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
