How to check if an alert exists using WebDriver

Question

I need to check the existence of Alert in WebDriver   Sometimes it pops up an alert but sometimes it will not pop up  I need to check if the alert exists first  then I can accept or dismiss it or it will say  no alert found

User · Answer

ExpectedConditions is obsolete  so           WebDriverWait wait   new WebDriverWait driver  TimeSpan FromSeconds 15            wait Until SeleniumExtras WaitHelpers ExpectedConditions AlertIsPresent       C  Selenium   39 ExpectedConditions is obsolete  39

User · Answer

The following  C  implementation  but similar in Java  allows you to determine if there is an alert without exceptions and without creating the WebDriverWait object   boolean isDialogPresent WebDriver driver        IAlert alert   ExpectedConditions AlertIsPresent   Invoke driver       return  alert    null

User · Answer

public static void handleAlert        if isAlertPresent             Alert alert   driver switchTo   alert            System out println alert getText             alert accept            public static boolean isAlertPresent          try            driver switchTo   alert              return true         catch NoAlertPresentException ex             return false

User · Answer

This code will check whether the alert is present or not   public static void isAlertPresent        try      Alert alert   driver switchTo   alert        System out println alert getText     Alert is Displayed               catch NoAlertPresentException ex       System out println  Alert is NOT Displayed

User · Answer

I would suggest to use ExpectedConditions and alertIsPresent    ExpectedConditions is a wrapper class that implements useful conditions defined in ExpectedCondition interface   WebDriverWait wait   new WebDriverWait driver  300   timeout in seconds     if wait until ExpectedConditions alertIsPresent     null      System out println  alert was not present    else     System out println  alert was present

User · Answer

I found catching exception of driver switchTo   alert    is so slow in Firefox  FF V20  amp  selenium-java-2 32 0     So I choose another way       private static boolean isDialogPresent WebDriver driver            try               driver getTitle                return false            catch  UnhandledAlertException e                   Modal dialog showed             return true                    And it s a better way when most of your test cases is NO dialog present  throwing exception is expensive

User · Answer

public boolean isAlertPresent           try                 driver switchTo   alert             return true              try      catch  NoAlertPresentException Ex                  return false              catch         isAlertPresent     check the link here https   groups google com forum  fromgroups  topic webdriver 1GaSXFK76zY

User · Answer

public boolean isAlertPresent       try         driver switchTo   alert         system out println   Alert Present        catch  NoAlertPresentException e          system out println  No Alert Present

User · Answer

I would suggest to use ExpectedConditions and alertIsPresent    ExpectedConditions is a wrapper class that implements useful conditions defined in ExpectedCondition interface   public boolean isAlertPresent        boolean foundAlert   false      WebDriverWait wait   new WebDriverWait driver  0   timeout in seconds         try           wait until ExpectedConditions alertIsPresent             foundAlert   true        catch  TimeoutException eTO            foundAlert   false            return foundAlert        Note  this is based on the answer by nilesh  but adapted to catch the TimeoutException which is thrown by the wait until   method

[selenium] How to check if an alert exists using WebDriver?

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