public componentDidMount(){
  var reactHandler = this;
  var Xresults = {};

  jquery.ajax({
   //url: `${this.props.siteurl}/_api/web/lists/getbytitle('EmployeeList')/items`,
   url: "https://blabla.sharepoint.com/sites/ilss/_api/search/query?querytext='ContentType:test_matters'&selectproperties='RefinableString10%2cCreatedBy%2cCreated'&rowlimit=500'",

   type: "GET",
   headers:{'Accept': 'application/json; odata=verbose;'},
   success: function(resultData) {

            for(var i=0;i<resultData.d.query.PrimaryQueryResult.RelevantResults.TotalRows;i++){
              Xresults [resultData.d.query.PrimaryQueryResult.RelevantResults.Table.Rows.results[i].Cells.results[2].Key] = resultData.d.query.PrimaryQueryResult.RelevantResults.Table.Rows.results[i].Cells.results[2].value;
    }

    reactHandler.setState({
      items: Xresults
    });
   },
   error : function(jqXHR, textStatus, errorThrown) {
   }
   });
   }