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.

Answer 1

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

Answer 2

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); }