Handling hidden elements in Selenium Java - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to find a hidden element by its ID.

Selenium Java

WebElement hiddenElement = driver.findElement(By.[1]("hiddenElementId"));

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

Aid

Bname

CclassName

DtagName

Attempts:

3 left

💡 Hint

Common Mistakes

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

Trying to interact with the element before locating it.

To find an element by its ID, use By.id. This works even if the element is hidden.

2fill in blank

medium

Complete the code to check if a hidden element is displayed.

Selenium Java

boolean isVisible = driver.findElement(By.id("hiddenElementId")).[1]();

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

AisDisplayed

BisSelected

CisEnabled

DisVisible

Attempts:

3 left

💡 Hint

Common Mistakes

Using isEnabled() which checks if the element is enabled, not visible.

Using isSelected() which is for selectable elements like checkboxes.

The isDisplayed() method returns false for hidden elements and true for visible ones.

3fill in blank

hard

Fix the error in the code to click a hidden element using JavaScript executor.

Selenium Java

JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("document.getElementById('hiddenElementId').[1]();");

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

AclickIt

BclickElement

CclickOn

Dclick

Attempts:

3 left

💡 Hint

Common Mistakes

Using non-existent JavaScript methods like clickElement().

Forgetting to cast the driver to JavascriptExecutor.

The correct JavaScript method to simulate a click is click(). Other options are invalid and cause errors.

4fill in blank

hard

Fill both blanks to wait until a hidden element becomes visible using WebDriverWait.

Selenium Java

WebDriverWait wait = new WebDriverWait(driver, Duration.ofSeconds(10));
wait.until(ExpectedConditions.[1](By.[2]("hiddenElementId")));

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

AvisibilityOfElementLocated

BpresenceOfElementLocated

Cid

Dxpath

Attempts:

3 left

💡 Hint

Common Mistakes

Using presenceOfElementLocated which does not guarantee visibility.

Using By.xpath when the ID locator is simpler and more reliable.

visibilityOfElementLocated waits for the element to be visible, and By.id locates it by ID.

5fill in blank

hard

Fill both blanks to scroll to a hidden element and click it using JavaScript executor.

Selenium Java

WebElement element = driver.findElement(By.[1]("hiddenElementId"));
JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("window.scrollTo(0, arguments[0].[2]);", element);
js.executeScript("arguments[0].click();", element);

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

Aid

BoffsetTop

CscrollHeight

DscrollTop

Attempts:

3 left

💡 Hint

Common Mistakes

Using scrollHeight which is the total height, not the element's position.

Using incorrect locator strategies.

Locate the element by ID, then scroll to its offsetTop position and click it using JavaScript.

Practice

1. Which Selenium method helps to check if an element is visible on the page?

easy

A. isEnabled()

B. isDisplayed()

C. getText()

D. click()

Solution

1. Step 1: Understand visibility check methods

   The isDisplayed() method returns true if the element is visible on the page.

2. Step 2: Compare other methods

   isEnabled() checks if element is enabled, getText() gets text, and click() performs click action, none check visibility.

3. Final Answer:

   isDisplayed() -> Option B

4. Quick Check:

   Visibility check = isDisplayed() [OK]

Hint: Use isDisplayed() to check visibility quickly [OK]

Common Mistakes:

• Confusing isEnabled() with visibility check
• Using getText() to check visibility
• Trying to click before checking visibility

2. Which of the following is the correct syntax to click a hidden element using JavaScript in Selenium Java?

easy

A. driver.javascriptExecutor.execute("arguments[0].click();", element);

B. driver.executeScript("arguments[0].click();", element);

C. JavascriptExecutor.executeScript("arguments[0].click();", element);

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

Solution

1. Step 1: Cast driver to JavascriptExecutor

   In Selenium Java, to run JavaScript, cast WebDriver to JavascriptExecutor: ((JavascriptExecutor)driver).

2. Step 2: Use executeScript method correctly

   Call executeScript with JavaScript code and element as argument: executeScript("arguments[0].click();", element);

3. Final Answer:

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

4. Quick Check:

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

Hint: Cast driver to JavascriptExecutor before executeScript [OK]

Common Mistakes:

• Calling executeScript directly on driver without casting
• Using wrong method names like execute()
• Incorrect object references for JavascriptExecutor

3. What will be the output of the following code snippet if the element is hidden?

WebElement element = driver.findElement(By.id("hiddenBtn"));
boolean visible = element.isDisplayed();
System.out.println(visible);

medium

A. false

B. true

C. null

D. Throws NoSuchElementException

Solution

1. Step 1: Understand isDisplayed() behavior

   The isDisplayed() method returns false if the element exists but is hidden (not visible).

2. Step 2: Check element presence

   Since findElement finds the element by id, no exception is thrown. The element is hidden, so isDisplayed() returns false.

3. Final Answer:

   false -> Option A

4. Quick Check:

   Hidden element visibility = false [OK]

Hint: isDisplayed() returns false for hidden elements [OK]

Common Mistakes:

• Assuming isDisplayed() throws exception if element is hidden
• Confusing false with null
• Expecting true without checking visibility

4. Identify the error in this code snippet that tries to click a hidden element:

WebElement element = driver.findElement(By.id("hiddenBtn"));
element.click();

medium

A. No error, element.click() works on hidden elements

B. Throws NoSuchElementException because element is missing

C. Throws ElementNotVisibleException because element is hidden

D. Throws StaleElementReferenceException due to stale element

Solution

1. Step 1: Understand click behavior on hidden elements

   Trying to click a hidden element using element.click() causes ElementNotVisibleException because Selenium cannot interact with invisible elements.

2. Step 2: Check element presence

   The element is found, so no NoSuchElementException. It is not stale, so no StaleElementReferenceException.

3. Final Answer:

   Throws ElementNotVisibleException because element is hidden -> Option C

4. Quick Check:

   Click hidden element error = ElementNotVisibleException [OK]

Hint: Clicking hidden elements throws ElementNotVisibleException [OK]

Common Mistakes:

• Assuming click works on hidden elements
• Confusing NoSuchElementException with visibility issues
• Ignoring exception types for stale elements

5. You want to click a button that is hidden by default and only visible after scrolling. Which approach is best to handle this in Selenium Java?

hard

A. Use JavascriptExecutor to scroll element into view, then use element.click()

B. Directly call element.click() without scrolling

C. Use Thread.sleep() to wait and then click

D. Use Actions class to move to element and then click

Solution

1. Step 1: Scroll element into view using JavaScript

   Hidden elements due to scrolling can be made visible by scrolling them into view with JavascriptExecutor: executeScript("arguments[0].scrollIntoView(true);", element);

2. Step 2: Click the now visible element

   After scrolling, use element.click() to interact safely with the visible element.

3. Final Answer:

   Use JavascriptExecutor to scroll element into view, then use element.click() -> Option A

4. Quick Check:

   Scroll then click = JavascriptExecutor + click [OK]

Hint: Scroll element into view before clicking hidden buttons [OK]

Common Mistakes:

• Clicking without scrolling causes exceptions
• Using Thread.sleep() instead of scrolling
• Relying only on Actions class without scrolling