Toggle CSS Class On Scroll – ClassToggler
A small JavaScript library that toggles CSS classes of an element when it is scrolled into or out of the viewport.
JavaScript & CSS viewport
Advanced Visible State Detection – visibilityEvents.js
visibilityEvents.js is an advanced ‘is in viewport’ detection library to determine whether a part or all or the entire element is within the viewport.
JavaScript Library To Detects If Elements Are In View – enter-view.js
enter-view.js is a pure JavaScript library that for the detection of HTML elements within the browser viewport.
Element Visibility Detector JavaScript Library – ViewportDetector.js
ViewportDetector.js is a lightweight and convenient JavaScript library to detect if an element is inside the viewport and allows you to do some stuff as the element becomes visible on scroll.
Tiny JavaScript Library For Checking If An Elements Is In Viewport – hunt.js
hunt.js is a lightweight yet robust JavaScript library used for the detection of HTML elements within the browser viewport.
Detect If An Element Is Visible – nowUseeMe
nowUseeMe is a Vanilla JavaScript solution to detect if an element is visible within the browser viewport. Also supports window scroll events.
Is In Viewport Checker With Pure JavaScript – white-in-view
white-in-view is a very small JavaScript library that checks if an element is in the viewport and adds matched CSS classes to it based on the current in or out state.
Detecting An Element Appears Or Disappears From The Viewport – in-view.js
Just another JavaScript library which detects when an element is in the viewport and triggers custom events when it is scrolled into or out of the view.
JavaScript Library To Detect If An Element Is In View – inView.js
inView.js is a pure JavaScript library that watches for the scroll event and executes callbacks when an element is scrolled in or out of the viewport.