MediaWiki:Common.js

/* Any JavaScript here will be loaded for all users on every page load. */
document.addEventListener('DOMContentLoaded', function() {
    // This assumes you've given your link an ID for easy targeting
    var searchLink = document.querySelector('a[href*="Special:Search"]'); // Finds the first link to Special:Search
    if (searchLink) {
        searchLink.addEventListener('click', function(e) {
            e.preventDefault(); // Stops the link from causing a page load
            var searchInput = document.querySelector('input[type="search"], #searchInput'); // Adjust based on your wiki's search input
            if (searchInput) {
                searchInput.focus(); // Focuses the search input
                // Trigger any additional behaviors here if necessary
            }
        });
    }
});