[рони]

wemon,

document.addEventListener('DOMContentLoaded', () => {
        const lang = document.querySelector(".lang-switcher");
        lang.addEventListener("click", event => {
            let href = event.target.getAttribute('href');
            if (href) {
                event.preventDefault();
                let value = href.match(/[^\/]+/g)[1];
                let url = window.location.href;
                let reg = new RegExp(`\/[^\/]+\/${value}\/`);
                url = url.replace(reg, href);
                window.location.href = url;
            }
        })
    });