Simple protractor test for isElementPresent failing with unsupported locator strategy

Question

My test:

it(\'should allow login\', function() {
  browser.get(\'index.html\');

  $(\'#username\').sendKeys(\'administrator\');
  $(\'#password\').sendKeys(\'pa         


        

Answer 1

$('#logout') is a WebElement. isElementPresent takes a locator, like by.css

$('#username').sendKeys('administrator');
$('#password').sendKeys('password');
$('#login').click();

var logout = by.css('#logout');
browser.wait(function() { return $p.isElementPresent(logout); }, 8000);
expect($p.isElementPresent(logout)).toBeTruthy();