JSFiddle - React, Tailwind, and code Playground

by shehovn

HTML

<div class="one">Some content</div>
<div class="two">Another one</div>

CSS

.one {
    padding: 5px;
    background-color: #000;
    color: #fff;
    border-bottom: 1px solid #ddd;
}

JavaScript

(function(){
    
function css(a){
    var sheets = document.styleSheets, o = {};
    for(var i in sheets) {
        var rules = sheets[i].rules || sheets[i].cssRules;
        for(var r in rules) {
            if(a.is(rules[r].selectorText)) {
                o = $.extend(o, css2json(rules[r].style), css2json(a.attr('style')));
            }
        }
    }
    return o;
}

function css2json(css){
        var s = {};
        if(!css) return s;
        if(css instanceof CSSStyleDeclaration) {
            for(var i in css) {
                if((css[i]).toLowerCase) {
                    s[(css[i]).toLowerCase()] = (css[css[i]]);
                }
            }
        } else if(typeof css == "string") {
            css = css.split("; ");          
            for (var i in css) {
                var l = css[i].split(": ");
                s[l[0].toLowerCase()] = (l[1]);
            };
        }
        return s;
    }
    
var style = css($(".one"));
$(".two").css(style);
    
})(jQuery);