Mouse events are fundamental for creating interactive web interfaces. They allow you to respond when a user interacts with elements using a mouse or similar pointing device. The most common mouse events include click, which fires when a user presses and releases a mouse button on an element; dblclick, which triggers after two rapid clicks; mouseover, which occurs when the pointer enters an element; and mouseout, which fires when the pointer leaves an element. Additionally, mousedown happens when a mouse button is pressed down, and mouseup when it is released.

Each mouse event provides useful properties through the event object. For example, clientX and clientY represent the horizontal and vertical coordinates of the mouse pointer relative to the viewport, allowing you to track where the user is interacting. The button property indicates which mouse button was involved in the event: 0 for the left button, 1 for the middle, and 2 for the right button. By combining these events and properties, you can create dynamic behaviors, such as highlighting elements on hover, implementing drag-and-drop, or responding to right-clicks.