selenium webdriver - TypeError: WebElementCondition did not resolve to a WebElement: [object Object] -

issue: in particular webpage want wait particular element , perform operation on element.

code used:

    //official webapp url     browser.driver.get('http://ubet-feature-qa.opal.dnb.com');      // variable particular element     var usernamedisplayedonhomepagefield = element(by.css('[ng-if="authsrv.getusername()"]'));      //function wait element , return element availability     this.isloggedin = function(){      browser.driver.wait(protractor.until.elementisvisible(usernamedisplayedonhomepagefield));     return usernamedisplayedonhomepagefield.isdisplayed();         }; 

expected result: should return element availability either true or false

actual result: getting below error message, not sure why this..

typeerror: webelementcondition did not resolve webelement: [object object]

screenshot

a selenium condition cannot resolve protractor elementfinder.

you use protractor.expectedconditions instead of protractor.until condition:

var ec = protractor.expectedconditions; var button = element(by.css("...")); browser.wait(ec.visibilityof(button), 1000); button.click(); 

you use selenium element selenium condition:

var until = protractor.until; var button = browser.findelement(by.css("..."));  browser.wait(until.elementisvisible(button), 1000).then(function(button){    button.click(); }); 

and way webelement elementfinder:

var until = protractor.until; var button = element(by.css("..."));  browser.wait(until.elementisvisible(button.getwebelement()), 1000).then(function(button){    button.click(); });