protractor Page Objects First Page Object

Example

/* save the file in 'pages/loginPage'
var LoginPage = function(){

};

/*Application object properties*/
LoginPage.prototype = Object.create({}, {
    userName: {
        get: function() {
            return browser.driver.findElement(By.id('userid'));
        }
    },
    userPass: {
        get: function() {
            return browser.driver.findElement(By.id('password'));
        }
    },
    submitBtn: {
        get: function() {
            return browser.driver.findElement(By.id('btnSubmit'));
        }
    }
});

/* Adding functions */
LoginPage.prototype.login = function(strUser, strPass) {
    browser.driver.get(browser.baseUrl);
    this.userName.sendKeys(strUser);
    this.userPass.sendKeys(strPass);
    this.submitBtn.click();
};

module.exports = LoginPage;

Let's use our first page object file in our test.

var LoginPage = require('../pages/loginPage');
describe('User Login to Application', function() {
    var loginPage = new LoginPage();

    beforeAll(function() {
        loginPage.login(browser.params.userName, browser.params.userPass);
    });
    
    it('and see a success message in title', function() {
        expect(browser.getTitle()).toEqual('Success');
    });

 });