QuirksBlog monthlies

This is the monthly archive for October 2017.

Intersection Observers: the beginning

Permalink | in Coding techniques

Today I spent about an hour in writing a few very simple Intersection Observer tests, two hours in running them in a few browsers, and now an hour in writing down the results.

I’ve only just started my research, but can already draw a few odd conclusions, which make me fear Intersection Observers are not yet ready to be deployed on a large scale, particularly on mobile.

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Scrolling your website past the iPhone X’s notch

Permalink | in Safari

During the introduction of the iPhone X a hilarious gif made the Twitter rounds, showing a list scrolling past the new notch.

I asked the question any web developer would ask: “Hey, is this even possible with web technology?” Turns out it is.

(We should probably ask: “Hey, is this a useful effect, even if it’s possible?” But that’s a boring question, the answer being Probably Not.)

So for laughs I wrote a proof of concept (you need to load that into the iPhone X simulator). Turns out that this little exercise is quite useful for wrapping your head around the visual viewport and zooming. Also, the script turned out to be quite simple.

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safe-area-inset values on iOS11

Permalink | in Safari

With the iPhone X’s notch came viewport-fit=cover and safe-area-inset, as explained here. It turns out that safe-area-inset is 0 on iOS11 devices that are not the iPhone X. This may sound logical, but I wonder if it is. Also, the value remains static, even when you zoom in.

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See the September 2017 archive.

This is the blog of Peter-Paul Koch, web developer, consultant, and trainer. You can also follow him on Twitter.
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