google-chromeiosipadmobile-safariweb-browser
I have some iPads I'd like my staff to use. However, these are 4th generation iPads, so the latest iOS I'm able to install on them is v10.3.3. However, the website they need to access requires a more modern browser than the built-in Safari.
We tried downloading the Chrome app, but it seems the Chrome app is using the Safari engine.
Is there any way to use a modern browser (one that supports ES6+ Javascript) on iOS 10.3.3?
OS X's built in screen reader, VoiceOver, works in Chrome.
To enable it, go to System Preferences-> Universal Access-> Seeing and toggle the VoiceOver: radio group to On. You will also be able to check the shortcut key for easily enabing/disabling VoiceOver.
I recommend you take some time and familiarize yourself with VoiceOver; it's very powerful but takes some getting used to.
Click the VoiceOver Utility button to configure VoiceOver. This lets you change, among many other options, the voice and speaking speed.
Turning on the Developer Toolbar showed lots of JavaScript errors, specifically:
undefined, typeerror, can't find variable $
This indicates that $, the "root" variable for jQuery was not set and therefore jQuery was not loaded.
Further, the error ajax.googleapis....ery/1.7.1/jquery.min.js - syntaxerror - parse error showed that the cached version of the jQuery library was corrupted and this is the reson why jQuery's $ was not loaded.
Force quitting Safari and clearing the cache again resolved the issue.
Best Answer
From what little I know about ECMAScript Safari on iOS (which all browsers must use for rendering web pages, as @Mark pointed out in his comment) some things are supported but many are not. And your guess is as good as anyone's as to why that is the case (not to mention off-topic here).
So you are likely out of luck for full ECMAScrip support on iOS unless you want to go the jailbreak route. We can't help with that and I don't know if there is a browser for jailbroken iOS devices that does support ECMAScript.