JSFiddle - React, Tailwind, and code Playground

by JJ Gerrish

HTML

<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<h1 id="first">First header</h1>
<h1 id="second">Second header</h1>

JavaScript

var first = document.getElementById("first");
var second = document.getElementById("second");

first.onmouseenter = function(){
    second.style.color = "red";
}

first.onmouseleave = function(){
    second.style.color = "black";
}

second.onmouseenter = function(){
    first.style.color = "red";
}

second.onmouseleave = function(){
    first.style.color = "black";
}