Irish Android

No let up in quality in this video. Here are my notes for the final video in the original series: Cross site scripting (XSS) is a big problem. Huge privs accorded to a successful attacker. Caja and adsafe - make js safer. Don't confuse a variable and a value. How does an object get a reference: By Creation By Construction By Reference David Parnas: http://www.cs.umd.edu/class/spring2003/cmsc838p/Design/criteria.pdf Lazy programmers guide http://www.youtube.com/watch?v=eL5o4PFuxTY Keep performance delays below 100ms - provide some sort of immediate feedback. Don’t fiddle with code. Measure first. Use PageSpeed Arrays can be slow in older versions of ie. No hashmaps. Don’t add unnecessary chrome. Takes time. Don’t tune for quirks. Keep code clean and readable. Future versions of JS engines will be much faster. Your quirk optimisations may cause trouble. jslint.com Avoid global variables. Avoid ++ - too easy to mess up Use jsl

These videos are remarkable in the packed world of IT training videos in that they are clear and enjoyable to watch. The fourth instalment is about Ajax, but goes into plenty of detail that I didn't know about where the DOM came from and some info about the famous browser wars. Here are my notes so that you can see what is in there before you invest 90 minutes. Markup languages RUNOFF GML - generalized markup language SGML HTML - simplified SGML Latex Angle brackets came from Scribe . HTML Does not fail on errors - allowed innovation. Otherwise the web would have frozen. 2 types of outlines - H1 - not nested and p type which are. Yuk. CSS Not modular - clashes can wreck your page. difficult to manage selectors - classitis and iditis. None of the browser vendors ever got it implemented! The DOM Brendan Eich - Netscape Browser workflow url -> Fetch -> cache  -> Parse -> Tree ->  Flow -> display list ->  Paint -> pixels Comments a

He has now moved on to other things, but these videos are still around. They are like reading a novel - long form is still best. No sound bites here. Each video is over an hour long and there are 8 of them. I am only on the third at the moment, but am getting a huge amount out of them. If you are like most js developers and me you will be bludgeoning your way through whatever tasks you need to complete without knowing the details. JQuery et al insulate us from having to know this stuff right? Afraid not. There is no substitute for knowing the javascript in detail. These videos manage to do that.