我正在尝试使用selenium-webdriver登录facebook.com。

var webdriver = require('selenium-webdriver'),
    By = require('selenium-webdriver').By,
    until = require('selenium-webdriver').until;

var driver = new webdriver.Builder()
    .forBrowser('firefox')
    .build();

driver.get('https://www.facebook.com/login');
driver.findElement(By.id('email')).sendKeys('****');
driver.findElement(By.id('pass')).sendKeys('*****');
driver.findElement(By.id('loginbutton')).click();

driver.findElement(By.linkText('Settings')).then(function(element) {
  console.log('Yes, found the element');
}, function(error) {
  console.log('The element was not found, as expected');
});
driver.quit();

它给出了错误：

>     /home/shubham/node_modules/selenium-webdriver/index.js:25
>     const builder = require('./builder');
>     ^^^^^
>     SyntaxError: Use of const in strict mode.
>         at Module._compile (module.js:439:25)
>         at Object.Module._extensions..js (module.js:474:10)
>         at Module.load (module.js:356:32)
>         at Function.Module._load (module.js:312:12)
>         at Module.require (module.js:364:17)
>         at require (module.js:380:17)
>         at Object.<anonymous>
> (/home/shubham/Music/amazon_login/test_22_4_16/sel_login.js:1:79)
>         at Module._compile (module.js:456:26)
>         at Object.Module._extensions..js (module.js:474:10)
          at Module.load (module.js:356:32)

node --version v0.10.37

npm --version1.4.28

protractor --version 版本3.2.2

selenium-webdriver@2.53.1