How to detect is the page is running on web app?

How to detect is the page is running on a web app like 'Add to Home Screen' feature on browsers? Tried searching, but no useful answers.

Solution

Fixed:

in manifest.json, added ?mode=webapp in start-url.

Chunk downloading of the big files right to the hard drive
My custom CSS transition animation is not working on hover after I added AOS JS library
how to get the Google analytics client ID
Toggle vue-multiselect close/open on button click
Best way to filter an objects's properties for data
Passing function with arguments as a prop and invoking it internally in React
Outlook calendar don't render with FullCalendar
Is there a way to validate and allow only https url's using .isUri i.e. without using Regex in JavaScript?
How to clear react native webview cookies?
Skipping a test in Cypress conditionally
How can I get all the HTML in a document or node containing shadowRoot elements
Typescript: No index signature with a parameter of type 'string' was found on type '{ "A": string; }
Retain Twitter Bootstrap Collapse state on Page refresh/Navigation
How to get "Results per Row" (from a 'clicked entry' off a "dropdown menu") to show up correctly?
Is there is a C# function which is similar to .Map() in JavaScript?
How to trigger SVG render same as manual DOM edit in Chrome using JS?
How do I test a Node.JS Script that is not a module and runs as soon as it's called?
Set element width based on a string that is not in the element
Testing JavaScript Written for the Browser in Node JS
Where are the trailing commas coming from in these radio buttons?
How to verify a signature from the Phantom wallet?
How to get the value of a Google Chrome flag using Javascript
event.preventDefault cannot block clipboard paste in chatgpt.com prompt box
Should I use ref or findDOMNode to get react root dom node of an element?
Disable button for 5 seconds with different label and change after it
JavaScript - Get all but last item in array
React-Redux: Should all component states be kept in Redux Store
Is it possible to use Closure Compiler ADVANCED_OPTIMIZATIONS with jQuery?
Capture selected option returns not defined instead
Uncaught TypeError: matchExpr[type].exec is not a function