JSFiddle - React, Tailwind, and code Playground

HTML

Your data is:
<div id="d"></div>

CSS

body {
    list-style-image:url('23 "Cows", leaping!');
}

JavaScript

var getStyle = function(el, cssprop) {
    if (el.currentStyle) {
        return el.currentStyle[cssprop];
    } else if (document.defaultView && document.defaultView.getComputedStyle) {
        return document.defaultView.getComputedStyle(el, "")[cssprop];
    } else {
        return (el.style) ? el.style[cssprop] : 0;
    }
};

var pullCSSMeta = function() {
    var aMeta = getStyle(document.body, 'listStyleImage').split('/'),
        meta = aMeta[aMeta.length - 1];

    return decodeURIComponent(meta.substr(0, meta.length - 1).replace(/"$/,''));
};

document.getElementById('d').innerHTML = pullCSSMeta();