How do I know if an application is installed on an ios device using JavaScript?
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How do I know if an application is installed on an ios device using JavaScript?
Is there a method to determine in a web page if the device has a particular app installed?
Depending on what you want to do, there is a way. Check out Launching an app with a custom url scheme.
If you want to get your mobile browsers to download/use your application, you can set it up with a custom url scheme as detailed in that post. From safari, add a link to your app's custom url. If you get an error or aren't redirected when a link is clicked or triggered (which you can check for with a setTimeout()) Then the app is not installed.
I don't know what your use case is, so that's the best I can do.
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