Is it possible to make an in-app button that triggers the PWA "Add to Home Screen" install banner? : <p>I understand that with a properly made Progressive Web App mobile browsers will display a banner prompting users to 'Install' the app on their home screen.</p>

<p>I have been looking around for a way to trigger that prompt from within the app, but have not been able to find anything.</p>

<p>Is there a line of JavaScript that can be used to call the install prompt banner at any time?? Something that I could add to a install button tucked away in a help screen for instance? </p>

<p>It might be difficult for some users to find the "Add to Home Screen" option if they missed the install banner prompt. I'd like to give them a button they can click to be prompted again. </p>
