问使用node.js selenium异步页对象模式

EN

var employee = new Employee('grimlek', 'Charles', 'Sexton', 'TitleTitle',
    'Upper Management', 'Company Admin', 'Contractor', '-7', 'Remote',
    '05212016', '3369407787', '3368791234', 'charles@example.com',
    'charles.sexton', 'Skype', 'abcdefgh');

driver.get('https://website.com/login')
.then(function() {
     //This behaves as intended
     loginPage.login('company.admin', 'password') })
.then(function() {
      //Add employee
      employeePage.addEmployee(employee) })
.then(function() {
     //Search for employee after employee is added 
     employeePage.searchEmployee(employee)});

var EmployeePage = function (driver) {

this.addEmployee = function (employee) {
    driver.findElement(webdriver.By.css('button[class=\'btn btn-default\']')).then(function (element) {
        //
        //Search employee function is done before the line below this
        //
        element.click();
    }).then(function () {
        setTimeout(function () {
            driver.findElement(webdriver.By.id('employee_username')).then(function (element) {
                element.sendKeys(employee.username);
            });

            driver.findElement(webdriver.By.id('employee_first_name')).then(function (element) {
                element.sendKeys(employee.firstName);
            });

            driver.findElement(webdriver.By.id('employee_last_name')).then(function (element) {
                element.sendKeys(employee.lastName);
            });

            driver.findElement(webdriver.By.id('employee_title_id')).then(function (element) {
                element.sendKeys(employee.title);
            });

            driver.findElement(webdriver.By.id('employee_role')).then(function (element) {
                element.sendKeys(employee.role);
            });
        }, 5000);
    });
//
//
//Search employee should occur when the thread leaves the function
//
};

this.searchEmployee = function (employee) {
    driver.findElement(webdriver.By.css('input[class=\'form-control ng-pristine ng-valid\']')).then(function(element) {
       element.sendKeys(employee.firstName + ' ' + employee.lastName); 
    });
};