JavascriptExecutor is one of famous interfaces from the Selenium family, by using JavascriptExecutor, you can inject JavaScript calls in Selenium.
Today, I’ll show you a basic example use case of JavascriptExecutor, where one can create a custom alert (which is not available in the actual source) on any web page.
If you want to explore more details about JavascriptExecutor interface – Please click Here.
Example Program to Create custom Alert using JavascriptExecutor
package swdbasics;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
public class JsAlertCreation {
public static void main(String[] args) throws InterruptedException
{
// inform selenium about driver path
System.setProperty("webdriver.chrome.driver", "D:\\browser-drivers\\chromedriver.exe");
// instantiate driver object
WebDriver driver = new ChromeDriver();
// launch aut
driver.get("https://www.walmart.com/");
//maximize the site
driver.manage().window().maximize();
// lets wait for some time
Thread.sleep(3000);
// cast driver object
JavascriptExecutor js = (JavascriptExecutor)driver;
// create alert
js.executeScript("alert('Welcome to Keren Automation');");
// wait for some time
Thread.sleep(4*1000);
// handle this alert
driver.switchTo().alert().accept(); // click on "Ok" on alert box
// wait for some time
Thread.sleep(2000);
// quit browser
driver.quit();
}
}
Some more use-cases of JavascriptExecutor are on the way 🙂