JSFiddle - React, Tailwind, and code Playground
by NabiKAZ
HTML
<div id="x"></div>
<div id="y" style="display:none"></div>
JavaScript
alert( $("#x").css('display') == 'none' || $("#y").css('display') == 'none' );
alert( $("#x, #y").css('display') == 'none' );