[Solved] What will be the output of this code? metrics = driver.execute_script('return window.performance.... What will be the output of this code? | Selenium Python

Selenium Python - Advanced Patterns

What will be the output of this code? metrics = driver.execute_script('return window.performance.getEntriesByType("resource")') print(len(metrics)) Assuming the page loaded 5 resource files (images, scripts, etc.).

A0

B5

C1

DError

Step-by-Step Solution

Solution:

Step 1: Understand getEntriesByType('resource')
This returns a list of resource timing entries, one per loaded resource.
Step 2: Count the number of resources loaded
Since 5 resources loaded, len(metrics) will be 5.
Final Answer:
5 -> Option B
Quick Check:
Resource count = 5 entries [OK]

Quick Trick: getEntriesByType('resource') returns all loaded resources [OK]

Common Mistakes:

Expecting zero if no resources
Confusing with navigation entries
Assuming error on valid JS

Master "Advanced Patterns" in Selenium Python

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Trace Try Challenge Automate Recall Frame

More Selenium Python Quizzes

What will be the output of this code?

Step 1: Understand getEntriesByType('resource')

Step 2: Count the number of resources loaded

Final Answer:

Quick Check:

Want More Practice?