Scrolling into view in Selenium Java - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to scroll the element into view using JavaScriptExecutor.

Selenium Java

JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("arguments[0].[1](true);", element);

Drag options to blanks, or click blank then click option'

AscrollIntoView

Bscroll

CexecuteScript

Dclick

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'scroll' instead of 'scrollIntoView' causes JavaScript errors.

Trying to call 'executeScript' on the element instead of the JavascriptExecutor.

The scrollIntoView method scrolls the page until the element is visible.

2fill in blank

medium

Complete the code to find the element by its ID before scrolling it into view.

Selenium Java

WebElement element = driver.findElement(By.[1]("footer"));

Drag options to blanks, or click blank then click option'

AclassName

Bname

Cxpath

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'className' or 'name' when the element's ID is needed.

Using 'xpath' unnecessarily for simple ID selection.

To find an element by its ID attribute, use By.id.

3fill in blank

hard

Fix the error in the JavaScriptExecutor casting to scroll the element into view.

Selenium Java

JavascriptExecutor js = ([1]) driver;
js.executeScript("arguments[0].scrollIntoView(true);", element);

Drag options to blanks, or click blank then click option'

AJavascriptExecutor

BRemoteWebDriver

CWebDriver

DWebElement

Attempts:

3 left

💡 Hint

Common Mistakes

Casting to WebDriver or WebElement causes compile errors.

Casting to RemoteWebDriver is not necessary here.

You must cast the driver to JavascriptExecutor to use executeScript.

4fill in blank

hard

Fill both blanks to scroll the element into view and then click it.

Selenium Java

JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("arguments[0].[1](true);", element);
element.[2]();

Drag options to blanks, or click blank then click option'

AscrollIntoView

Bclick

Csubmit

DsendKeys

Attempts:

3 left

💡 Hint

Common Mistakes

Using submit or sendKeys instead of click.

Forgetting to scroll before clicking may cause element not clickable errors.

First, scroll the element into view, then perform a click action on it.

5fill in blank

hard

Fill all three blanks to scroll an element found by CSS selector into view and then click it.

Selenium Java

WebElement element = driver.findElement(By.[1](".menu-item"));
JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("arguments[0].[2](true);", element);
element.[3]();

Drag options to blanks, or click blank then click option'

AcssSelector

BscrollIntoView

Cclick

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Using id instead of cssSelector for the selector.

Calling click before scrolling causes errors.

Find the element by CSS selector, scroll it into view, then click it.

Practice

1. What is the main purpose of using scrollIntoView() in Selenium Java?

easy

A. To scroll the webpage until the specified element is visible on the screen

B. To click an element without scrolling

C. To find an element by its locator

D. To wait for an element to be clickable

Solution

1. Step 1: Understand the function of scrollIntoView()

   This method scrolls the page so that the element is visible in the viewport.

2. Step 2: Compare with other options

   Options A, C, and D describe different actions unrelated to scrolling the page.

3. Final Answer:

   To scroll the webpage until the specified element is visible on the screen -> Option A

4. Quick Check:

   scrollIntoView() = scroll element into view [OK]

Hint: scrollIntoView() makes element visible by scrolling [OK]

Common Mistakes:

• Confusing scrollIntoView() with click()
• Thinking scrollIntoView() finds elements
• Assuming scrollIntoView() waits for element

2. Which of the following is the correct syntax to scroll an element into view using JavascriptExecutor in Selenium Java?

easy

A. element.scrollIntoView();

B. driver.scrollIntoView(element);

C. driver.executeScript("scrollIntoView(element)");

D. ((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView(true);", element);

Solution

1. Step 1: Recall correct JavascriptExecutor syntax

   In Selenium Java, JavascriptExecutor requires casting driver and passing script with arguments.

2. Step 2: Validate each option

   ((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView(true);", element); uses correct casting and script with arguments[0]. Options A, B, and C are invalid or incomplete syntax.

3. Final Answer:

   ((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView(true);", element); -> Option D

4. Quick Check:

   Correct JavascriptExecutor syntax = ((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView(true);", element); [OK]

Hint: Cast driver to JavascriptExecutor and pass element as argument [OK]

Common Mistakes:

• Calling scrollIntoView() directly on driver
• Not casting driver to JavascriptExecutor
• Passing element inside script string incorrectly

3. What will be the result of the following Selenium Java code snippet?

WebElement element = driver.findElement(By.id("footer"));
((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView(false);", element);
System.out.println(element.isDisplayed());

medium

A. false

B. true

C. Throws NoSuchElementException

D. Throws JavascriptException

Solution

1. Step 1: Understand scrollIntoView(false) effect

   scrollIntoView(false) scrolls so element's bottom aligns with viewport bottom, making it visible.

2. Step 2: Check element visibility after scrolling

   Since element is scrolled into view, element.isDisplayed() returns true.

3. Final Answer:

   true -> Option B

4. Quick Check:

   scrollIntoView(false) makes element visible = true [OK]

Hint: scrollIntoView(false) scrolls element bottom into view [OK]

Common Mistakes:

• Assuming isDisplayed() returns false after scrolling
• Confusing scrollIntoView(true) and false
• Expecting exceptions without missing element

4. Identify the error in the following Selenium Java code snippet for scrolling an element into view:

WebElement element = driver.findElement(By.cssSelector(".my-element"));
JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("arguments[0].scrollIntoView(true);");

medium

A. Missing element argument in executeScript method

B. driver is not cast to JavascriptExecutor before assignment

C. Incorrect CSS selector syntax

D. scrollIntoView method does not accept boolean argument

Solution

1. Step 1: Check JavascriptExecutor assignment

   The assignment correctly casts driver to JavascriptExecutor.

2. Step 2: Verify executeScript arguments

   executeScript requires the element as second argument to replace arguments[0], missing here.

3. Final Answer:

   Missing element argument in executeScript method -> Option A

4. Quick Check:

   executeScript needs element argument for arguments[0] [OK]

Hint: Pass element as second argument to executeScript [OK]

Common Mistakes:

• Not casting driver to JavascriptExecutor
• Forgetting to pass element argument
• Misunderstanding scrollIntoView parameters

5. You want to scroll to a list of elements one by one and click each after scrolling into view. Which approach correctly combines scrolling and clicking in Selenium Java?

hard

A. for(WebElement el : elements) { driver.executeScript("scrollIntoView(el)"); el.click(); }

B. for(WebElement el : elements) { el.click(); ((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView(true);", el); }

C. for(WebElement el : elements) { ((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView(true);", el); el.click(); }

D. for(WebElement el : elements) { ((JavascriptExecutor) driver).executeScript("scrollIntoView(true);"); el.click(); }

Solution

1. Step 1: Scroll element into view before clicking

   Scrolling must happen before clicking to ensure element is visible and interactable.

2. Step 2: Validate correct JavascriptExecutor usage

   for(WebElement el : elements) { ((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView(true);", el); el.click(); } correctly casts driver, passes element as argument, and clicks after scrolling.

3. Final Answer:

   for(WebElement el : elements) { ((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView(true);", el); el.click(); } -> Option C

4. Quick Check:

   Scroll then click each element = for(WebElement el : elements) { ((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView(true);", el); el.click(); } [OK]

Hint: Scroll each element before clicking it in the loop [OK]

Common Mistakes:

• Clicking before scrolling
• Incorrect JavascriptExecutor syntax
• Not passing element argument in script