Use the JavaScript console in Firebug and run the following script snippet:
1 2 3 4 5 6 7 8 | var xmlhttp = new XMLHttpRequest(); xmlhttp.open("HEAD", "the_url",true); // Async HEAD request (relative path to avoid cross-domain restrictions) xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4) { // make sure the request is complete alert(xmlhttp.getAllResponseHeaders()) // display the headers } } xmlhttp.send(null); // send request |
cache-control, pragma, no-cache, expires header, and tons more. I learned a lot from the below referenced articles. Caching tutorial for web authors: http://www.mnot.net/cache_docs/ jGuru forum question: http://www.jguru.com/faq/view.jsp?EID=377
I just invested 30min to find tools/libraries which allow me to use PHP scripts instead of Java on the server when the front end is GWT. There are various potential channels through which GWT and PHP can talk to each other. GWT RPC, ideally native or over JSON/XML would certainly be the most obvious choice. […]
Finally, the first version of the iCalendar factory is here! It generates iCalendar objects and streams them as .ics attachments to your browser. URL parameters define all the attributes of the iCalendar. This allows to generate calendar entries from virtually everywhere.
Update 2013-03-24: this article refers to iTheme 1 and not to the currently used iTheme 2! This blog uses the iTheme for its layout and graphical representation. However, I wasn’t satisfied with the fixed width of 770px. In a time where wide-screen displays have become common I felt that a lot of precious screen space […]
I recently started surfing the Internet with cookies disabled in my browser. You wouldn’t believe how many sites that require cookies to be enabled fail to tell me so. I would guess it’s about 90%. Most often I notice this when I try to log in to a site and simply can’t get past the […]
After many hours searching the Internet for GWT widget libraries, analyzing them, and taking notes I thought I might as well publish my findings here. Feel free to comment and point out inconsistencies. At the moment the market seems to be split into two segements: – a few small or medium-size, low-key libraries with little […]
Whenever I’m confused about the wmode parameter when embedding Flash objects into websites I turn to http://www.communitymx.com/content/article.cfm?cid=e5141. It describes the three modes “window”, “opaque”, and “transparent” with just the right degree of details and contains sensible demos. Of course, it’s helpful that the explanations are also related to DHTML menus because problems with those most […]
I always get annoyed when I end up at sites where the developer (deliberately?) forgot to set the focus to the relevant input field if there is one. IMDB, as great as its content is, for example fails to give that hang-on-to-your-keyboard experience. I assume that usually you don’t want to switch from keyboard to […]
Being a software engineer I of course have both Firebug and Adblock Plus (ok, this has nothing to do with being a programmer ;-)) Firefox extensions installed on all systems. As one of its tasks Firebug dutifully reports all script errors. For quite some time I wondered why so many sites using Google Analytics fail […]