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Remove autoplay value, fixing compatibility with Safari macOS and iOS 11 #112

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thegreatsunra
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Autoplay is a boolean attribute, and Safari (both macOS and iOS 11 Safari) appears to choke if it is given a value.

The spec states, counter-intuitively, that passing an empty string as the value is the proper way to to define a boolean attribute as true:

Boolean attributes are considered to be true if they're present on the element at all, regardless of their actual value; as a rule, you should specify the empty string (””) in value (some people use the attribute's name; this works but is non-standard).

Autoplay is a boolean attribute, and Safari (both macOS and iOS 11
Safari) appears to choke if it is given a value.

[The spec
states](https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttr
ibute#Example), counter-intuitively, that passing an _empty string_ as
the `value` is the proper way to to define a boolean attribute as
`true`:

> Boolean attributes are considered to be true if they're present on
the element at all, regardless of their actual value; as a rule, you
should specify the empty string (`””`) in `value` (some people use the
attribute's name; this works but is non-standard).
Upon further testing it appears Safari iOS continues to choke even with an empty attribute.

Considering the attribute should be applied to the HTML element itself, there shouldn't be a need to add it programmatically.
@thegreatsunra
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Upon further testing it appears iOS 11 Safari continues to choke on the blank attribute, so I have removed it entirely.

@aaerofeev
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aaerofeev commented Dec 12, 2017

Hello! When your pull request will be in release? I want using component in IOS 11!

@EGreg
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EGreg commented Jan 9, 2018

Have you teste it and it works?

@jonpemby
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It's working for me on iOS 11 Safari.

@nhoizey
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nhoizey commented Feb 23, 2018

Any progress on this? Thanks!

@avmaisak
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Hello, @thegreatsunra

Could you propose this PR to my fork, please?
https://github.com/avmaisak/instascan

@prayerslayer
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Btw if your video isn't playing on iOS after user consent regarding webcam access, check if you gave Instascan a playsinline (playsInline in react) attribute. That's required in addition to autoplay. https://stackoverflow.com/questions/43570460/html5-video-autoplay-on-iphone

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7 participants