If you’d like to contribute a bit of your time back to the benefit the larger web community, I’ve collected a few mini-projects that’ll have high impact. They’re together in an issue tracker of an otherwise empty github repo: github.com/paulirish/lazyweb-requests.

Some of the things in there:

• Port these fancy animation effects from Dojo to jQuery UI [ticket]
• Patch the W3C CSS Validator to not throw errors on vendor prefixes. [ticket]
• Develop the W3C HTML Validator (they need help!) [ticket]
• Research and chart the performance difference between excanvas and FlashCanvas [ticket]
• Document what features you now have available when you sunset support for IE6, IE7, etc. [ticket]
• Begin documentation for MrDoob’s incredible three.js library. [ticket]
• Make some effing flames in <canvas>. [ticket]
• A bunch of other cool shit…

If you have some extra time this holiday break or whenever, want to learn something new and help the larger community… please dig in!

There’s this little trick you can get away with that’ll save you some headaches:

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<img src="//domain.com/img/logo.png">

If the browser is viewing that current page in through HTTPS, then it’ll request that asset with the HTTPS protocol, otherwise it’ll typically* request it with HTTP. This prevents that awful “This Page Contains Both Secure and Non-Secure Items” error message in IE, keeping all your asset requests within the same protocol.

*Of course, if you’re viewing the file locally, it’ll try to request the file with the file:// protocol.

We use this trick in the HTML5 Boilerplate for a clever request of jQuery off the Google CDN:

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<script src="//ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.js"></script>
<script>!window.jQuery && document.write(unescape('%3Cscript src="js/libs/jquery-1.4.2.js"%3E%3C/script%3E'))</script>

Technically, this is called a “network-path reference” according to RFC 3986. Oh and if you want to be truly correct, you’ll use the term “scheme” instead of “protocol” when talking about URLs.

This trick also works fine in CSS:

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.omgomg { background: url(//websbestgifs.net/kittyonadolphin.gif); }

… assuming the site you’re pointing to has this asset available on both HTTP and HTTPS.

Caveat: When used on a <link> or @import for a stylesheet, IE7 and IE8 download the file twice. All other uses, however, are just fine.

Thx to miketaylr, ralphholzmann, annevk for smarts on this, and ajaxian, where I think I learned it like 4 years ago? maybe?

Yes of course, wouldn’t that be nice… So I worked with the Google Analytics javascript lead developer (God, I love working at google) to see if we could do this… turns out we can’t. There is an edgecase bug in IE6 that causes a dialog to blow up… under some security settings (unsure if they are default) when requesting from the non-‘ssl’ subdomain. screenshot here. So feel free to take 40 bytes off your GA snippet if you don’t care about IE6.. otherwise you’re gonna need that ternary operator. :)

The reason this doesn’t work in IE6 is that the server is using SNI to deduce what certificate to return. XP (and thus IE6) doesn’t support SNI in the HTTPS stack. See for details.

When kicking off a new project, I’ve always wanted to take with me all the kickass tricks I learned on the previous one. This project has been on and off for the last 2.5 years with a whole lot of on lately. Finally, HTML5 Boilerplate is ready to share.

It’s essentially a good starting template of html and css and a folder structure that works. But baked into it is years of best practices from front-end development professionals. Take a peek through the source to get a feel of what’s inside. And if you think there’s too much? Delete key that badboy.

I’m very interested in your contributions.. what else deserves to be in this base template?