CSS backdrop filter polyfill
Demo: https://ahsane.github.io/backdropjs/index.html (not working because RawGit is down)
Backdrop filter polyfill for browsers that do not support it
Safari already has backdrop-filter support, so this is not needed for it.
NPM
npm install backdropjs --save-dev
Documentation
Current limitation: This works only for static content.
First add the script
<script src="backdrop.js"></script>
Then use the API
backdrop(backdropsource, backdropapply, blur, scroller)
backdropsource: The dom element where backdrop is going to be applied from
backdropapply: The dom element where backdrop is going to be applied to
blur: The amout of blur in px (equivalent to backdrop-filter: blur)
scroller: (string [yes/no]) Keep this to yes.
Example: backdrop(document.documentElement.outerHTML, document.getElementById('xx'), 20, "yes");