I would like to implement a smartbanner similar Amazon in Android.
I know how to implement the native smartbanner, but I would like to create one in javascript that: - if the app is installed open the app - else open play store
By browser i cant't know if the app is installed but amazon can do it...
You can use a JS plugin to do that, like jQuery Smart Banner or Smart App Banner. It also works cross-browser/cross-os.