JSFiddle - React, Tailwind, and code Playground

JavaScript

var div = document.createElement('div');
document.body.appendChild(div);

$(div).css('backgroundSize', 'cover');

var result = window.getComputedStyle ? window.getComputedStyle(div, null).backgroundSize : div.currentStyle.backgroundSize;

// Returns 'cover' in IE < 9 as well
console.log(result);