Whenever you’re working on a new WordPress theme that includes hover (mouseover) effects, especially dropdown or flyout menus, you might want to include hoverIntent. HoverIntent is a term that describes a concept through which you delay a hover action until a certain amount of time has passed, in order to make sure that the user really intended to trigger that action.
We’ve all been on websites with dropdown menus that tend to get in the way of the content, and pop open as soon as your mouse touches even a small portion of them, and we’ve most likely all been annoyed by it. The idea behind hoverIntent is to measure the speed of the mouse movement, attempting to determine whether the user actually intended to stop on the item or not. If the mouse just moves over an item with a hover effect, but doesn’t stop on it, the hover effect should not be triggered; if, however, the user’s mouse does slow down enough or stop on the item, the hover effect should be triggered.