JSFiddle - React, Tailwind, and code Playground

HTML

<div id="id"></div>
<div id="computed"><div>

CSS

#id {
    width: 100px;
    height: 100px;
    background: #000;
}

JavaScript

var test = document.createElement('div'),
    testStyle = test.style;

jQuery.support.boxShadow =
    'boxShadow' in testStyle ? 'boxShadow' :
    'MozBoxShadow' in testStyle ? 'MozBoxShadow' :
    'WebkitBoxShadow' in testStyle ? 'WebkitBoxShadow' :
    'OBoxShadow' in testStyle ? 'OBoxShadow' :
    'msBoxShadow' in testStyle ? 'msBoxShadow' :
    false;

if ( jQuery.support.boxShadow && jQuery.support.boxShadow != 'boxShadow' ) {
    jQuery.cssProps.boxShadow = jQuery.support.boxShadow;
}

$(function() {
    $('#id').css('boxShadow', "-10px -10px 8px grey");
    $('#computed').text(
        $('#id').css('boxShadow')
    );
});