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With the new improvements to Googlebot, single page apps will likely advance from being niche solutions for non-public websites to being the default way to build websites. A website will contain a single HTML page (typically heavily cached and served via a CDN). The JS on that page will then fetch content (as JSON) from the server and change the path as necessary using pushState. I find the cheerleading for single page websites disconcerting and the proposed benefits unconvincing. Why should this be the default way to build websites? A few desultory upsides are presented without a full consideration of the multiple downsides to client-side development. The biggest advantage of thick-client architecture is sending less data to the client and, if you like using javascript, writing everything in js, but there are multiple downsides compared to more traditional thin-client websites - load times which depend more on client capabilities (hugely variable and out of your control) than servers, dependence on js on the client, loading pages while your content is placed in the dom by js, forcing everyone to write in js instead of switching language on the server whenever they like, ignoring the simple document model of html served at predictable URIs, which has served the web so well and means you can use dynamic or static documents, full documents can be cached for very quick serving and by intermediaries, etc, etc. Of course some of these can be overcome, but there are serious obstacles, and the advantages are meagre to non-existent unless you enjoy javascript and feel its the only language you'll ever need. For someone who doesn't like working in js, and/or doesn't have a huge amount of logic already in js (many websites work just fine with some limited ajax), trying to force every website into the procrustean bed of client-side development is not an appealing prospect. I can see why it appeals to those who have already invested in js frameworks, but predictions of its future dominance on the web, like predictions that eworld, activex or mobile would replace the web, are overblown. I suspect the birth and death of Javascript will be a footnote in the history of the web, rather than taking it over as this article suggests. If anything we should be looking to replace our dependence on js, not making it mandatory. |