Selenium Webdriver: The method alert() is undefined for the type WebDriver.TargetLocator

I am trying to handle alerts using Selenium Webdriver, according the selenium documentation the correct implementation is:开发者_StackOverflow

Alert alert = driver.switchTo().alert();

However I am getting error message The method alert() is undefined for the type WebDriver.TargetLocator

what version of Selenium 2 has this web driver api

Alerts are not be supported by HmltUnit driver. In HtmlUnitDriver.java (Selenium 2.0.6) :

public Alert alert() {
  throw new UnsupportedOperationException("alert()");
}

Which driver are you using?

I'm using selenium 2.3 and it works for me. From what I've seen, alerts only work with windows that ONLY have the ok button. Thats where you put the alert.accept(); statement in. Another problem that I've seen with alerts is that it may jump over the alert so you may have to have a wait statement for that specific alert. Hope this helps.

You may need to use a separate import statement for Alert:

import org.openqa.selenium.Alert;

I had the same issue.