Direction-Aware Hover with CSS3 and jQuery | Codrops
This tutorial demonstrates how to build an interactive hover effect where a semi-transparent overlay slides onto thumbnail images from the direction the user's mouse is entering, then slides out in the same direction when the mouse leaves. The technique combines jQuery event handlers to detect mouse direction by dividing the element into four triangular zones, CSS3 transitions to animate the overlay movement, and fallback jQuery animations for older browsers that don't support CSS transitions.