How can multiple classes be defined and applied in JavaScript for different elements, like in the case of drop zones?

To define and apply multiple classes in JavaScript for different elements, such as in the case of drop zones, you can use the classList property to add or remove classes dynamically. This allows you to style elements based on their class names and change their appearance or behavior as needed. By defining specific classes for different drop zones and applying them to the corresponding elements, you can customize the look and functionality of each drop zone independently. ```javascript // Define classes for different drop zones const dropZone1Class = 'drop-zone-1'; const dropZone2Class = 'drop-zone-2'; // Apply classes to elements document.getElementById('element1').classList.add(dropZone1Class); document.getElementById('element2').classList.add(dropZone2Class); ```