The shaking effect in jQuery UI is a dynamic animation that imparts multiple oscillations to an element, either in a vertical or horizontal direction. By using values like "left" or "right," the shaking occurs horizontally, while "up" or "down" values induce vertical shaking. This value determines the initial direction along the specified axis for the first movement step of the effect, resulting in an animated element that vibrates in the desired orientation.
The jQuery UI Shake effect introduces dynamic motion to HTML elements, creating a visually engaging shaking animation. By specifying parameters like direction, number of shakes, and distance, developers can customize the shaking behavior to suit their design. This effect adds an interactive and dynamic touch to web interfaces, enhancing user experience and visual appeal.