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The point of the <portal> element (behind a flag in Chrome Canary) is that you can preload another whole page (like <iframe>), but then have APIs to animate it to the current page. So "Single Page App"-like functionality (SPA), but natively. I think that's pretty cool. I'm a fan of JavaScript frameworks in general, when they are providing value by helping do things that are otherwise difficult, like fancy state management, efficient re-rendering, and component composition. … Read article The po...