How to scroll top of browser window from middle or bottom of browser window using javascript in protractor

Question

I need to click the element located at bottom of page then I have to click element located at top of page.

i.e scroll up which is not visible to browser.

For scroll down I've used:

browser.actions().mouseMove(element).perform()`" 

Kindly suggest solution to do this task

Answer 1

There are multiple ways to scroll to the very top of the page:

1. Via window.scrollTo():

   browser.executeScript("window.scrollTo(0, 0);");
   

2. Locate an element on top and scroll into it's view:

   var header = element(by.tagName("header"));
   browser.executeScript("arguments[0].scrollIntoView();", header.getWebElement());
   

3. Locate an element on top and move to it as you've demonstrated for the scroll down:

   var header = element(by.tagName("header"));
   browser.actions().mouseMove(header).perform();
   

Also see:

• scrollIntoView vs moveToElement