JSFiddle - React, Tailwind, and code Playground

by _rsp

HTML

<div id=colors></div>

JavaScript

function rainbow(n) {
    return 'hsl(' + n + ',100%,50%)';
}
for (var i = 0; i <= 240; i+=10) {
    $('<b>X</b>').css({
        color: rainbow(i)
    }).appendTo('#colors');
}