javascript - Protractor ElementArrayFinder.filter() running only once? -

i having trouble filtering elementarrayfinder of <tr> elements more once in page object. second filter being called right after first one. in following code, first verifying number in table, , filtering again click on it. reason don't combine these because in functions rely on parameter batchnumber of function, , different.

filter:

function verifybatchinlist(batchnumber){     batch_list_table.filter(function(elem, i){         return elem.element(by.xpath('./td[1]')).gettext().then(function(text){             text = text.trim();             return text === batchnumber;         });     }).then(function(results){         if(results.length < 1){             throw new error('could not find batch "'+batchnumber+'" in batch list');         }     }); } function editbatch(batchnumber){     selectbatch(batchnumber);     edit_button.click(); //this never happens } function selectbatch(batchnumber){     batch_list_table.filter(function(elem, i){ //this function never runs         return elem.element(by.xpath('./td[1]')).gettext().then(function(text){             text = text.trim();             return batchnumber === text;         });     }).then(function(results){ //this never runs either         if(results.length < 1){             throw new error('could not find batch "'+batchnumber+'" in batch list');         }         results[0].click();     }); 

when put breakpoint inside of filter function, gets there first iteration, not second. spec running looks this.

it('can commit batch', function(){     page.addspecimens.getbatchid().then(function(text){         batchids[0] = text.split(' ')[0];         page.addspecimens.commitbatch();         page = new pages.batchlist();         browser.sleep(2000); //for page load, temporary         page.verifybatchinlist(batchids[0]); //this works fine     }); }); it('can edit batch',function(){     page.editbatch(batchids[0]); //this runs, never filters }); 

the html table first td being batch number.