How to scroll down the page in Selenium WebDriver ?

We can scroll the web pages with the help of JavascriptExecutor interface and scrollBy method. In scrollBy method we pass the x-axis pixels and y-axis pixels.

window.scollBy(x-pixels,y-pixels);

or

window.scollBy(width,height);

JavascriptExecutor executor = (JavascriptExecutor)driver;

//scroll down 

executor.executeScript("window.scrollBy(0,1000)");

//scroll Up

executor.executeScript("scroll(0,-500)");

In some case, if I need to scoll down the page and click on any link on the page then how I know how much page should be scroll for clicking on the link.

In this case we need the below code for clicking to this link.

WebElement element=driver.findElement(By.partialLinkText("November"));

JavascriptExecutor executor = (JavascriptExecutor)driver;

executor.executeScript("arguments[0].scrollIntoView(true);",element);

element.click();