function listPreRender(renderCtx) {

        var context = SP.ClientContext.get_current();

        var list = context.get_web().get_lists().getByTitle('Workers');
        var caml = new SP.CamlQuery();
        caml.set_viewXml('View><Query></Query></View>');
        var listItems = list.getItems(caml);
        context.load(listItems, 'Include(ID)');
        context.executeQueryAsync(
               Function.createDelegate(this, function() {
                  var listEnumerator = listItems.getEnumerator();
                  while (listEnumerator.moveNext()) {
                  // get the current list item.
                  var listItem = listEnumerator.get_current();

                  // get the field value.
                  var fieldValue = listItem.get_item('ID');
                  var excludeRows = [0,1,2,5,6,8];
               }
        }),
        Function.createDelegate(this, function() {
           alert('Error fetching data from Sharepoint!');
        }));

        var rows = renderCtx.ListData.Row; //get current rows
        for(var i = excludeRows.length - 1; i >= 0; i--) {
           var rowIdx = excludeRows[i];  //get row index to exclude
           rows.splice(rowIdx, 1);  //delete List View Row
           renderCtx.ListData.LastRow = rows.length;  //update ListData.LastRow property
        }