JavaScript Can Change HTML Content Mocktest

The classList property in JavaScript is used to access and manipulate the CSS classes of an HTML element. This property provides methods like add(), remove(), toggle(), and contains() to manage CSS classes dynamically, allowing for easy addition, removal, or toggling of classes based on application logic or user interactions.

To dynamically change the font family of an HTML element using JavaScript, you can use the element.style.fontFamily property and set it to the desired font family name. For example, element.style.fontFamily = "Arial, sans-serif"; changes the font family of the element to Arial with a fallback to sans-serif, ensuring a consistent font style across different browsers.