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JavaScript and the Netflix User Interface
CowboyRobot writes Alex Liu is a senior UI engineer at Netflix and part of the core team leading the migration of Netflix.com to Node.js. He has an article at ACM's Queue in which he describes how JavaScript is used at Netflix. "With increasingly more application logic being shifted to the browser, developers have begun to push the boundaries of what JavaScript was originally intended for. Entire desktop applications are now being rebuilt entirely in JavaScript—the Google Docs office suite is one example. Such large applications require creative solutions to manage the complexity of loading the required JavaScript files and their dependencies. The problem can be compounded when introducing multivariate A/B testing, a concept that is at the core of the Netflix DNA. Multivariate testing introduces a number of problems that JavaScript cannot handle using native constructs, one of which is the focus of this article: managing conditional dependencies."
..is to not have a backspace ruin everything you just did just because you didn't have the focus you thought you had (Chrome!). And to work offline as good as online. Take email as an example. I really like using travel time to catch up on, reply to and delete email. But often travel time does not have internet access (train, plane). For now, email clients are superior to web email because of this.
It's unfortunate that Javascript has become the embodiment of the Golden Hammer in the programming world. And, just like a hammer made of gold, it doesn't even work that well as a hammer. It is only so widespread because when it comes to the web, it's the only tool you have.