Clear search bar on submit

clearSearchBar.uc.js

(function () {
  function initSearchTextRemover () {
    let searchbar = window.document.getElementById('searchbar');
    if (!searchbar) return;
    patchSearchbar(searchbar);
  }

  function patchSearchbar (searchbar) {
    if (searchbar.__patched__) return;
    let origDoSearch = searchbar.doSearch;
    searchbar.doSearch = function () {
      origDoSearch.apply(searchbar, arguments);
      searchbar.value = '';
    };
    searchbar.__patched__ = true;
  }

  initSearchTextRemover();
  window.addEventListener('aftercustomization', initSearchTextRemover, false);
}());