Search keyword from dbpedia using nodejs

See more:

Javascript

RDF

Node.js

I am new in node.js.I downloaded and executed a project from GitHub from this link.Here on this link there is live demo of this app. It is running rdf search using wikidata. This is the function that I found for the search of keyword from wikidata written in file public/scripts/controllers/main.js.

function search () {
        //TODO: fix when null;
        if (vm.searchInput != vm.lastSearch) {
          var input = vm.searchInput;
          vm.lastSearch = input;
          vm.searchWait = true;
          vm.noResults  = false;
          //$http.get('https://www.wikidata.org/w/api.php?action=wbsearchentities&format=json&language=en&limit=20&uselang=en&type=item&continue=0&search='+input).then(
          $http({
            method: 'GET',
            url: 'https://www.wikidata.org/w/api.php',
            params: {
              action: 'wbsearchentities',
              format: 'json',
              language: 'en',
              uselang: 'en',
              type: 'item',
              continue: '0',
              limit: '20',
              search: input,
              origin: '*',
            }
          }).then(
            function onSuccess (response) {
              onSearch(response.data.search);
            },
            function onError (response) { onSearchErr(); console.log('Error: ' + response.data); }
          );
          //request.execQuery(query.search(input), onSearch, onSearchErr);
        }
        vm.searchActive = true;
      }

What I have tried:

I have changed the above function for DBpedia but it not search the keyword from DBpedia

function search2 () {
        //TODO: fix when null;
        if (vm.searchInput != vm.lastSearch) {
          var input = vm.searchInput;
          vm.lastSearch = input;
          vm.searchWait = true;
          vm.noResults  = false;
          //$http.get('https://www.wikidata.org/w/api.php?action=wbsearchentities&format=json&language=en&limit=20&uselang=en&type=item&continue=0&search='+input).then(
          $http({
            method: 'GET',
            url: 'http://dbpedia.org/sparql',
            params: {
              action: 'wbsearchentities',
              format: 'json',
              language: 'en',
              uselang: 'en',
              type: 'item',
              continue: '0',
              limit: '20',
              search: input,
              origin: '*',
            }
          }).then(
            function onSuccess (response) {
              onSearch(response.data.search);
            },
            function onError (response) { onSearchErr(); console.log('Error: ' + response.data); }
          );
          //request.execQuery(query.search(input), onSearch, onSearchErr);
        }
        vm.searchActive = true;
      }

how I can change this above function for search in DBpedia?what is Javascript SPARQL API for DBpedia?Please help