socket.socket.disconnect()
Friday, March 22, 2013
Socket.IO 0.9.x client disconnect failed when using namespace
socket.disconnect() used to be working with my server. Then I changed my server to be using namespace, and the client side disconnect no longer works. Luckily I can find this from Google.
Thursday, March 21, 2013
Click a button to print an embedded PDF file without the printing dialog in Internet Explorer (silent print)
I recently helped a friend implementing a button to click, and it sends a hosted pdf to the defaulted printer without the printing dialog in IE8. I googled this about a few dozen pages and finally came across http://stackoverflow.com/questions/975652/silent-print-a-embedded-pdf. So here is the test.html. And due to the ActiveX used, you have to make this page to be trusted or in intranet.
<html>
<head>
<title>Test</title>
<script>
function printpdf(pdf_path) {
// remove the previous pdf <object> if existed
var elem = document.getElementById("pdf");
if (elem) {
elem.parentNode.removeChild(elem);
}
document.body.insertAdjacentHTML('beforeEnd', '<object id="pdf" classid="clsid:CA8A9780-280D-11CF-A24D-444553540000" width="0" height="0"><param name="src" value="' + pdf_path + '"/></object>');
pdf.printAll();
return false;
}
</script>
</head>
<body>
<!-- http://stackoverflow.com/questions/975652/silent-print-a-embedded-pdf -->
<button onclick="printpdf('sample.pdf');">Print PDF</button>
</body>
</html>
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