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by antichaos 3908 days ago
According to the spec, AMP developers are prohibited from adding their own JS, yet they are mandated to include a <script src="https://cdn.ampproject.org/v0.js" async></script> tag as the last element in the <head>. I find it amusing that the JavaScript library itself is 137KB big (38KB gzipped).
3 comments
callahad 3908 days ago
<img> and <video> are also prohibited in favor of mandatory custom elements like <amp-img> and <amp-video>.

...and vendor-specific tags like <amp-youtube>, <amp-twitter>, and <amp-instagram>, the library of which is controlled by a single gatekeeper.

There must be less invasive ways of achieving the same goal.

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51Cards 3908 days ago
However like any CDN content, the goal would be for it to be cached if it's in common use across AMP sites. One JS module that covers a large number of content delivery sites seems like a plus to me. I can't vouch for the whole concept yet though, still reading through their spec.
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cramforce 3908 days ago
Also: We can use a Service Worker for reliable caching of the JS.
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niutech 3907 days ago
Now compare this to Instant Articles spec: https://developers.facebook.com/docs/instant-articles/refere... No JS, no Custom Elements, just pure HTML.
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