Category: web

On URL accuracy, versioning and the immutable-redirect pattern

So you have this requirements: serve content (might be a static file or a dynamic page) under a URL make it cacheable by defining appropriate HTTP expiration headers yet, the content might change - serve it under a new URL the old URLs should still be valid but show the new content In my current … Continue reading On URL accuracy, versioning and the immutable-redirect pattern →

HTTP: The importance of declaring non-cachable resources as such

It works fine with Chrome and it fails on an Android 2.3 browser - the page is performing an XmlHttpRequest to the server for a resource that just changed for sure and yet it gets back an older version. That's the result of a. the browser assuming a resource is cachable even if no Etag … Continue reading HTTP: The importance of declaring non-cachable resources as such →

Internet Explorer: Disabling clicks on a page

Disabling clicks on a webpage should be easy: put a div in front of it with a fixed position which should get all clicks. With IE that is not easy because a completely transparent element will forward clicks to the underlying element. Some solutions I found: Alpha filter with background Adding these CSS properties (IE8 … Continue reading Internet Explorer: Disabling clicks on a page →

Internet Explorer, zooming and resize events

My current project (cat4trad) for the European Parliament, which involves heavily GWT and javascript in bringing a seamless user experience to translators, we frequently run into issues with different browsers. The one I run into today was about a window resize event not being detected by IE8 and IE9. This simple test should always print … Continue reading Internet Explorer, zooming and resize events →