JSFiddle - React, Tailwind, and code Playground

JavaScript

function expireAllCookies(name, paths) {
    var expires = new Date(0).toUTCString();

    // expire null-path cookies as well
    document.cookie = name + '=; expires=' + expires;

    for (var i = 0, l = paths.length; i < l; i++) {
        document.cookie = name + '=; path=' + paths[i] + '; expires=' + expires;
    }
}

function expireActiveCookies(name) {
    var pathname = location.pathname.replace(/\/$/, ''),
        segments = pathname.split('/'),
        paths = [];
    
    for (var i = 0, l = segments.length, path; i < l; i++) {
        path = segments.slice(0, i + 1).join('/');
        
        paths.push(path);       // as file
        paths.push(path + '/'); // as directory
    }
    
    expireAllCookies(name, paths);
}

function display() {
    document.write('<pre>' + (document.cookie || '{blank}') + '</pre>');
}

function create() {
    document.cookie = 'name=value1';
    document.cookie = 'name=value2; path=/';
    document.cookie = 'name=value3; path=/_display/';
}

function expire() {
    expireAllCookies('name', ['/', '/_display/']);
}

function expireActive() {
    expireActiveCookies('name');
}

display();

create();
display();
expire();
display();

create();
display();
expireActive();
display();