Important FAQ

The Document Object Model (DOM) is a tree-like structure representing a webpage's elements. It allows JavaScript to dynamically modify content, structure, and style, enabling interactive features without reloading the page. The DOM is widely supported by modern browsers.
To select an element from the DOM, I can use JavaScript methods like:
document.getElementById()
to select by ID.document.querySelector()
to select the first element matching a CSS selector.
Event delegation is a technique where a parent element handles events from its child elements via a single listener. It improves performance by reducing the number of event listeners and efficiently handles dynamic content.
To manipulate an element's attributes and style in the DOM:
setAttribute()
or getAttribute()
to change or retrieve
attributes.element.classList.add()
or
element.classList.remove()
.