Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take mock test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What method would you use to select an element with a unique ID?
💡 Hint: Look for methods focused on IDs.
Question 2
Easy
How would you select all elements of class 'example'?
💡 Hint: Think about methods that target classes.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
Which method returns a single element with a specific ID?
- getElementById
- getElementsByClassName
- querySelector
💡 Hint: Focus on the specificity of IDs.
Question 2
True or False: getElementsByClassName returns a static list of elements.
- True
- False
💡 Hint: Consider what happens when new elements are added.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a web page with multiple elements and write a JavaScript function to set all of their text contents based on user input.
💡 Hint: Use querySelectorAll to collect all elements and loop.
Question 2
Write a function that takes an element’s ID and changes its style to red.
💡 Hint: Remember how to access the style property of a selected element.
Challenge and get performance evaluation