web-ansol.org/themes/academic/assets/js/algolia-search.js

/*************************************************
 *  Academic
 *  https://github.com/gcushen/hugo-academic
 *
 *  Algolia based search algorithm.
 **************************************************/

if ((typeof instantsearch === 'function') && $('#search-box').length) {
  function getTemplate(templateName) {
    return document.querySelector(`#${templateName}-template`).innerHTML;
  }

  const options = {
    appId: algoliaConfig.appId,
    apiKey: algoliaConfig.apiKey,
    indexName: algoliaConfig.indexName,
    routing: true,
    searchParameters: {
      hitsPerPage: 10
    },
    searchFunction: function (helper) {
      let searchResults = document.querySelector('#search-hits')
      if (helper.state.query === '') {
        searchResults.style.display = 'none';
        return;
      }
      helper.search();
      searchResults.style.display = 'block';
    }
  };

  const search = instantsearch(options);

  // Initialize search box.
  search.addWidget(
    instantsearch.widgets.searchBox({
      container: '#search-box',
      autofocus: false,
      reset: true,
      poweredBy: algoliaConfig.poweredBy,
      placeholder: i18n.placeholder
    })
  );

  // Initialize search results.
  search.addWidget(
    instantsearch.widgets.infiniteHits({
      container: '#search-hits',
      escapeHits: true,
      templates: {
        empty: '<div class="search-no-results">' + i18n.no_results + '</div>',
        item: getTemplate('search-hit-algolia')
      },
      cssClasses: {
        showmoreButton: 'btn btn-outline-primary'
      }
    })
  );

  // On render search results, localize the content type metadata.
  search.on('render', function () {
    $('.search-hit-type').each(function (index) {
      let content_key = $(this).text();
      if (content_key in content_type) {
        $(this).text(content_type[content_key]);
      }
    });
  });

  // Start search.
  search.start();
}