AliExpress Modification cookie xman_us_f

ali_xman_us_f.user.js

// ==UserScript==
// @name         AliExpress Modification cookie xman_us_f
// @description  Modifier le cookie xman_us_f sur AliExpress
// @match        *://*.aliexpress.com/*
// ==/UserScript==

// Thanks AndShy for your help ! :)

(function() {
    'use strict';

    // Nouvelle valeur du cookie xman_us_f à ajouter
    var newValueToAdd = "&x_as_i=%7B%22channel%22%3A%22AFFILIATE%22%2C%22tagtime%22%3A1900000000000%7D";

    // Vérifier si le cookie existe déjà
    var currentCookie = document.cookie;
    var cookieName = "xman_us_f=";
    var cookieStartIndex = currentCookie.indexOf(cookieName);

    // Vérifier si le cookie contient déjà la nouvelle valeur
    if (currentCookie.includes(newValueToAdd)) {
        return; // Rien à faire, la nouvelle valeur existe déjà dans le cookie
    }

    if (cookieStartIndex === -1) {
        // Si le cookie n'existe pas, ajouter la nouvelle valeur complète
        document.cookie = "xman_us_f=" + newValueToAdd;
    } else {
        // Si le cookie existe, ajouter la nouvelle valeur à la fin sans remplacer l'ancienne valeur
        var cookieEndIndex = currentCookie.indexOf(";", cookieStartIndex);
        var cookieValue = "";

        if (cookieEndIndex === -1) {
            cookieValue = currentCookie.substring(cookieStartIndex + cookieName.length);
        } else {
            cookieValue = currentCookie.substring(cookieStartIndex + cookieName.length, cookieEndIndex);
        }

        // Mettre à jour le cookie en ajoutant la nouvelle valeur à la fin
        document.cookie = "xman_us_f=" + cookieValue + newValueToAdd;
    }
})();

Hi. Better way to add key with value is to check if there is another same key. Then delete it or write to it a new value. Otherwise possible that you add another key=value to presence one
PS: after changing cookies you should refresh page

No problem if you want to improve.

For this script need only refresh the first time, after that never need.

I use like that without problem it's perfect, thank you again for your help ! :)

You're welcome 🤗