How to perform a scroll in a drop down list to hidden element?

Question

How to perform a scroll in a drop down list with that format with selenium, appium ? I'm using tag name to identify elements, <md-option .../> are the items in the drop down list.

Here is my html code :

Answer 1

I have solved it by this way :

// Create instance of Javascript executor
JavascriptExecutor je = (JavascriptExecutor) driver;
//Identify the WebElement which will appear after scrolling down
WebElement element = driver.findElement(By.tagName("...."));
// now execute query which actually will scroll until that element is not appeared on page.
je.executeScript("arguments[0].scrollIntoView(true);",element);

Answer 2

Try following code.

browser.executeScript('window.scrollTo(0,0);').then(function () {
    page.saveButton.click();
})

Hope this helps. :)