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by arianon
3127 days ago
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YouTube is now written in Polymer, a library made by Google that uses the Web Components specifications, which currently only Chrome supports natively[1], so they have to rely on polyfills on the rest of the browsers, so it's understandable that YouTube can perform bad on browsers other than Chrome. [1]: https://caniuse.com/#search=web%20components |
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Firefox Nightly supports it, too, but Google still uses the polyfill there, and not even their normal polyfill, but a significantly slower one.