JSFiddle - React, Tailwind, and code Playground

HTML

<p>a paragraph.</p><div id="test" style="background-color: green;width: 100%;height: 200px;border-top-left-radius: 50px;border-top-right-radius: 50px;border-bottom-right-radius: 50px;border-bottom-left-radius: 50px;">your target div</div>

JavaScript

var data = '';

var style = $("#test").attr('style');
alert(style);
var styleObj = {};
$.each(style.split(';'),function(){
    var rule = this.split(':');
    styleObj[$.trim(rule[0])] = $.trim(rule[1]);
});

alert(styleObj["border-bottom-left-radius"]);
alert(styleObj["border-bottom-right-radius"]);
alert(styleObj["border-top-left-radius"]);