JSFiddle - React, Tailwind, and code Playground

by Tiago Antonio Jacobi

HTML

<div class="test-480">Hello1</div>
<div class="test-480">Hello2</div>
<div class="test-860">Hello3</div>

CSS

div {
    background: red;
}

JavaScript

$("[class^=test]").each(
    function (index, el) {
        var className = $(el).attr('class');
        if (className.indexOf("test-") >= 0) {
            var wdt = className.replace("test-", "");
            $(el).css("width", wdt+"px");
        }
    }
);