hasClassroom

hasClassroom is a JavaScript function designed to check if an HTML element possesses a specific CSS class. It is often used in web development for dynamic styling and interactive elements. The function typically takes two arguments: the HTML element to be inspected and the class name as a string. It returns a boolean value: true if the element has the specified class, and false otherwise.

The implementation of hasClassroom usually leverages the `classList` property available on DOM elements. The `classList` property returns a live, mutable object representing the class attributes of an element. This object provides methods like `add()`, `remove()`, `toggle()`, and importantly, `contains()`. The `contains()` method is specifically used by hasClassroom to determine the presence of a class.

For example, in JavaScript, one might write: `element.classList.contains('active')`. The hasClassroom function essentially encapsulates this logic for convenience and potentially broader browser compatibility in older environments where `classList` might not have been fully supported. Modern web development heavily relies on such checks for conditional rendering, event handling, and applying specific styles based on the state of an element. It is a fundamental tool for manipulating the Document Object Model (DOM) in response to user interactions or data changes.