Selenium sample program: Getting Error org.openqa.selenium.WebDriverException: expected expression, got end of script

Question

I am trying to do a sample program with selenium webdriver. I am using libraries from Selenium-java-2.53.1.

Here is my sample program

import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.AfterClass;
import org.testng.annotations.Test;

public class ScrollWebPage {

    WebDriver driver;
    String URL="https://www.gmail.com";

    @BeforeClass
    public void setUp(){
        driver =  new FirefoxDriver();
        driver.get(URL);
        driver.manage().window().maximize();
    }

    @Test(priority=1)
    public void scrollingToBottom(){
        ((JavascriptExecutor) driver).executeScript(URL, "window.scrollTo(0,document.body.scrollHeight)");  
    }

    @AfterClass
    public void tearDown(){
        driver.quit();
    }
}

The page is getting opened but it is not able to scroll down. seems an issue with executeScript()

Please help

Saurabh Gaur · Accepted Answer · 2016-07-07 07:09:01Z

1

.executeScript() expecting JavaScript string expression as first arguments while you are providing simply a String as Url which is not an JavaScript expression as exception says, You need to change :-

((JavascriptExecutor) driver).executeScript(URL, "window.scrollTo(0,document.body.scrollHeight)");

to

((JavascriptExecutor) driver).executeScript("window.scrollTo(0,document.body.scrollHeight)");

Note :- .executeScript() expect arguments like String arg0, Object... arg1 which means first arguments should be String but it should be JavaScript expression and second arguments should be Array of Object like Object[]

In your case no need to provide URL as arguments if you simply want to execute scrolling function.

Hope it will help you..:)

edited Jul 7, 2016 at 7:09

answered Jul 7, 2016 at 6:56

Saurabh Gaur

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1 Comment

Venkatesh Kolla - user2742897 Over a year ago

Thank you. I removed URL and it worked. Thanks for making me understand what it means.

Mohankumar Loganathan · Accepted Answer · 2016-07-07 06:56:21Z

0

Simply Use as below to see the scroll working. Try in some other page because gmail don't have a much bigger page to feel the scroll.

((JavascriptExecutor)driver).executeScript("window.scrollBy(0,2500)");

answered Jul 7, 2016 at 6:56

Mohankumar Loganathan

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