WOW is a JavaScript library and animation engine designed to trigger CSS animations when elements enter the browser viewport during page scrolling. It serves as a tool for orchestrating visual transitions based on the user's scroll position and element visibility.
The library functions as a dynamic content animation tool, capable of detecting and animating new elements added to the page after the initial load. This allows visual effects to be applied to dynamically injected content without requiring a page refresh.
The system utilizes the Intersection Observer API to detect viewport entry and employs CSS class injection to activate animations. Configuration is handled through custom data attributes on HTML elements, and a Mutation Observer is used to monitor the document object model for new content.
