JSFiddle - React, Tailwind, and code Playground

HTML

<div id="select-me">
</div>

CSS

#select-me {width:40px;height:40px;background-color:blue;}

JavaScript

$$ = (function($) {
    return function(el, tag) {
        if (typeof el === 'object' && el.selector !== undefined) {
            return $(el.selector);                  
        }
        return $(el);
    }
}($));

var objSelector = {'selector' : '#select-me', 'a' : 'somestring', 'b' : 1243};
    
$(document).ready(function() {
    $$(objSelector).css({'border':'1px solid red'});
});