Mastering the Document Object Model (DOM) is crucial for any JavaScript developer, especially during technical interviews. This guide covers key DOM-related questions like selecting elements by ID, using querySelector and querySelectorAll, adding and removing elements, event delegation, and more. It explains critical concepts such as the differences between innerHTML and textContent and how to dynamically change an element's style using JavaScript.
Table of contents
Question 1: What is the DOM?Question 2: How do you select an element by its ID in the DOM?Question 3: What are the differences between querySelector and querySelectorAll ?Question 4: How do you add a new element to the DOM?Question 5: How can you remove an element from the DOM?Question 6: What is event delegation and how does it work?Question 7: How do you change the style of an element using JavaScript?Question 8: What is the difference between innerHTML and textContent ?Conclusion5 Comments
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