What is the best way to handle a Javascript popup using Selenium Webdriver

Question

Can anyone suggest what is the best way to handle a JavaScript Pop-up using Selenium Webdriver?

Answer 1

Hello Dimple, the simplest way to handle JavaScript popup/alert using selenium is by using the Alert interface. To access the popup/alert dialog in Selenium Webdriver, use the following line of code:

webDriver.switchTo().alert()

The alert interface provides following methods to handle/interact with such Javascript popups/dialogs:

• accept(): To accept an popup/alert
• dismiss(): To decline an popup/alert
• getText(): To get the text written on the popup/alert
• sendKeys(keysToEnter): To enter some text on the popup/alert's input box

Answer 2

webDriver.switchTo().alert()

it inbuild selenium only 

//Store the alert in a variable
Alert alert = driver.switchTo().alert();

//Store the alert in a variable for reuse
String text = alert.getText();

//Press the Cancel button
alert.dismiss();