javascript - Protractor: get Element's Id -

i have had asynchronous calls on place in protractor , javascript in general. used take 2 lines of code takes 10. here's example:

i writing protractor utility method check dom properties on group of related divs , input text boxes. validation framework working on. idea pass protractor element method , based on element's id check dom properties on related divs , input text boxes. how got work:

/**  * checks error in nuaf field   * @param {string or element} field .   * @param {string} errortext expected validation error text appear in tooltip  */ exports.checkforerror = function (field, errortext) {      var innercheck = function(fieldid) {         expect(fieldid).not.tobe(undefined);         var elmntd = element(by.id('divinput.'+fieldid));         expect(elmntd).not.tobe(null);         expect(elmntd.getattribute('tooltip')).tocontain(errortext);         expect(exports.hasclass(element(by.id('prnt.'+fieldid)), 'has-error')).tobe(true);     };      // unbelievably complex block of code gets id of      // field argument.  if string passed, fieldid .     if (typeof field === 'string') {         innercheck(field);     } else {         //what used field.id needs 6 lines of code?         field.getattribute('id').then(             function(idattribute) {                  console.log( "*********: "+idattribute );                 innercheck(idattribute);             }         );      } }; 

question is: there better, less verbose way write field.getattribute('id').then block of code. it's shame write id of element.

this not verbose asynchronous code... if take account can directly pass function innercheck promise:

// unbelievably complex block of code gets id of  // field argument.  if string passed, fieldid . if (typeof field === 'string') {     innercheck(field); } else {     field.getattribute('id').then(innercheck);  } 

should easy