I won’t say much nonsense, I will just post the js code to you. The specific code is as follows:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http:///TR/html4/">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>js_canvas_download</title>
<script type='text/javascript' src='/jquery/2.1.1/'></script>
<script type="text/javascript" src="//1.0/"></script>
</head>
<body>
<div ></div>
<a download=""></a>
<button >save</button>
</body>
</html>
<script>
jQuery('#qrcode').qrcode({width: 500,height: 500,text: ""});
$("#save").click(function(){
var canvas = $('#qrcode').find("canvas").get(0);
var url = ('image/jpeg');
$("#download").attr('href', url).get(0).click();
return false;
});
</script>
The above is the code for generating and downloading QR codes introduced by the editor to you. I hope it will be helpful to you. If you have any questions, please leave me a message and the editor will reply to you in time. Thank you very much for your support for my website!