Your web browser keeps a stack (or list, if you will) of the web pages that you have visited in that window. Let’s say your home page is search.example and from there you visit a few other websites: video.example, portal.example, and news.example. Upon visiting the last one, the list looks like this: search.example -> video.example … Read more
This is a bug in Firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=356558 Try this workaround: <iframe src=”webpage2.html?var=xxx” id=”theframe”></iframe> <script> var _theframe = document.getElementById(“theframe”); _theframe.contentWindow.location.href = _theframe.src; </script>
Here is how you can do this: Drag you bookmarklet to Bookmarks Bar. Next to it create a bookmark of a site which favicon you want to use for your bookmarklet. Open Bookmarks Manager, click Organize dropdown, and select Export, save your bookmarks as html file. Open that html file in text editor. Find the … Read more
The advice these days is: Optimize for 1024×768. For most sites this will cover most visitors. Most logs show that 92-99% of your visits will be over 1024 wide. While 1280 is increasingly common, there are still lots at 1024 and some below that. Optimize for this but don’t ignore the others. 1024 = ~960. … Read more
See: user-agent-string-history It all goes back to browser sniffing and making sure that the browsers are not blocked from getting content they can support. From the above article: And Internet Explorer supported frames, and yet was not Mozilla, and so was not given frames. And Microsoft grew impatient, and did not wish to wait for … Read more
CSS to detect screen orientation: @media screen and (orientation:portrait) { … } @media screen and (orientation:landscape) { … } The CSS definition of a media query is at http://www.w3.org/TR/css3-mediaqueries/#orientation
Attention: this is an extremely rough and oversimplified sketch, assuming the simplest possible HTTP request (no HTTPS, no HTTP2, no extras), simplest possible DNS, no proxies, single-stack IPv4, one HTTP request only, a simple HTTP server on the other end, and no problems in any step. This is, for most contemporary intents and purposes, an … Read more
The 4K limit you read about is for the entire cookie, including name, value, expiry date etc. If you want to support most browsers, I suggest keeping the name under 4000 bytes, and the overall cookie size under 4093 bytes. One thing to be careful of: if the name is too big you cannot delete … Read more
A MIME type is a label used to identify a type of data. It is used so software can know how to handle the data. It serves the same purpose on the Internet that file extensions do on Microsoft Windows. So if a server says “This is text/html” the client can go “Ah, this is … Read more
I know this is an old post but it is still very relevant. I have found that modern browsers support rfc5987, which allows utf-8 encoding, percentage encoded (url-encoded). Then Naïve file.txt becomes: Content-Disposition: attachment; filename*=UTF-8”Na%C3%AFve%20file.txt Safari (5) does not support this. Instead you should use the Safari standard of writing the file name directly in … Read more