PUBLIC MARKS with tags "conception web" & navigateur

How to lose weight (in the browser) And what if we got together a bunch of experts who work on large sites to create a definitive front-end performance guide?

Test and debug on Opera Mobile using a Mac or PC

LABjs (Loading And Blocking JavaScript) is an open-source (MIT license) project. on-demand JavaScript loader, capable of loading any JavaScript resource, from any location, into any page, at any time. LABjs by default will load (and execute) all scripts in parallel as fast as the browser will allow. However, you can easily specify which scripts have execution order dependencies and LABjs will ensure proper execution order. This makes LABjs safe to use for virtually any JavaScript resource, whether you control/host it or not, and whether it is standalone or part of a larger dependency tree of resources. It uses an expressive, chaining API to specify which scripts to load, and when to wait ("block"), if necessary, for execution before proceeding with further execution.

ealing with browser caching is a balancing act. On one hand, you aim to minimize load times and bandwidth use by ensuring that images, scripts, and style sheets are cached by your visitors; however, you still want to ensure that they’re accessing the most recent versions of all your files. In this article, I’ll show you a few methods for controlling how your site’s files are cached by browsers so you can achieve the best of both worlds: maintaining optimal performance while ensuring that any updates are seen immediately, without a hitch by all of your users.

The following tables compare support of HTML 5 differences from HTML 4 for a number of layout engines. The specification is still a working draft, not a recommendation, and thus not stable. Unless otherwise specified in footnotes, comparisons are based on the stable versions without any add-ons, extensions or external programs.

«bookmarklet» dédié au CSS/XHTML pour tous les navigateurs

the process by which the geometry of the layout engine’s formatting objects are computed.

Debug JavaScript, inspect CSS and the DOM, and view any errors – Opera Dragonfly makes developing using Opera easier than ever, both on your computer and mobile phone. Check out our alpha release for a taste of things to come.

These CSS bugs are all found only in Internet Explorer, versions 5 and higher.