[Solved] Given the code below, what will be the output?JavascriptExecutor js = (JavascriptExecutor)... Given the code below, what will be the output?JavascriptExecutor js = (JavascriptExecutor) driver; | Selenium Java

Selenium Java - JavaScriptExecutor

Given the code below, what will be the output?

JavascriptExecutor js = (JavascriptExecutor) driver;
Boolean isVisible = (Boolean) js.executeScript("return document.getElementById('btn').offsetParent !== null;");
System.out.println(isVisible);

AAlways prints false

BThrows NullPointerException if element not found

Ctrue if element with id 'btn' is visible, false otherwise

DPrints the element's HTML content

Step-by-Step Solution

Solution:

Step 1: Understand offsetParent property
offsetParent is null if element is hidden or not in DOM; otherwise not null.
Step 2: JavaScript returns boolean visibility
The script returns true if element is visible, false if hidden or missing.
Final Answer:
true if element with id 'btn' is visible, false otherwise -> Option C
Quick Check:
offsetParent check returns visibility boolean = A [OK]

Quick Trick: Use offsetParent to check element visibility via JS [OK]

Common Mistakes:

Expecting exception if element missing
Assuming offsetParent always true
Confusing visibility with content

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More Selenium Java Quizzes

Given the code below, what will be the output?

Step 1: Understand offsetParent property

Step 2: JavaScript returns boolean visibility

Final Answer:

Quick Check:

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