JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li><a href="#test1">test</a></li>
    <li><a href="#test2">test</a></li>
    <li><a href="#test3">test</a></li>
    <li><a href="#test4">test</a></li>
</ul>

JavaScript

$(document).ready(function() {
    var current = localStorage['current'] || "#test1"
    $('a[href="'+current+'"]').css('color', 'red');
    $('a').click(function(e) {
        $('a').css('color', '');
        $(this).css('color', 'red');
        localStorage['current'] = $(this).attr('href');
    });
});