QR_code/QR_code.html at master · linfulongnet/QR_code · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type='text/javascript' src='http://cdn.staticfile.org/jquery/2.1.1/jquery.min.js'></script>
    <script type="text/javascript" src="http://cdn.staticfile.org/jquery.qrcode/1.0/jquery.qrcode.min.js"></script>
</head>
<body>
<div id="qrcode"></div>
<a id="download" download="qrcode.jpg"></a>
<button id="save">save</button>
<script>
    jQuery('#qrcode').qrcode({width: 500,height: 500,text: "http://cn.bing.com"});
//    jQuery('#qrcode').qrcode({width: 500,height: 500,text: "http://www.baidu.com"});
    $("#save").click(function(){
        var canvas = $('#qrcode').find("canvas").get(0);
        var url = canvas.toDataURL('image/jpeg');
        $("#download").attr('href', url).get(0).click();
        return false;
    });
</script>
</body>
</html>