JSFiddle - React, Tailwind, and code Playground

HTML

<div id ="div_1" class="res">Тест</div> 

    <div id ="div_2" class="res">Тест</div>  

    <div id ="div_3" class="res">Тест</div>     

<div id ="result" ></div>

CSS

.res
{
    margin:5px;
    width:70px;
    height:50px;
    border:1px double black;
}
#div_1{background-color:blue;}
#div_2{box-shadow:0px 0px 10px rgba(0,0,0,0.5)}
#div_3{border:3px double black;}

JavaScript

var count_div = $(".res").length;
        var val = " ";
        for (i = 1; i <= count_div; i++) {
            val +=" #div_"+i+JSON.stringify($("#div_"+i).css(["background-color","border","box-shadow"])).replace(/\"/g,"").replace(/,(?=\w)/g,";");
        }

$("#result").html(val)