MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */
document.addEventListener("DOMContentLoaded", function () {
    var loginButton = document.querySelector("#pt-login a"); // Adjust if needed
    if (loginButton) {
        var currentPage = encodeURIComponent(mw.config.get('wgPageName'));

        // Only modify the login button if the page is in a restricted namespace
        var restrictedNamespaces = ["Ana", "Internal"]; // Add your private namespaces here
        var namespace = mw.config.get('wgCanonicalNamespace');

        if (restrictedNamespaces.includes(namespace)) {
            loginButton.href = "/index.php?title=Special:UserLogin&returnto=" + currentPage;
        }
    }
});