Easy Calendar Heatmap Web Component – contributions-calendar.js
A JavaScript library that helps you create a Github-style calendar heatmap (aka contributions calendar) to visualize time series data.
JavaScript & CSS heat map
Github Style Contribution Graph In JavaScript – Heatmap.js
A JavaScript library to generate a Github contribution graph like heatmap for displaying user activity.
Simple Heat Map Generator with JavaScript and Canvas – Simpleheat
Simpleheat is a simple and fast heat map visualization library which allows you to draw Html5 canvas based heat maps with ease.
Create A Scroll Position Heat Map using JS and Canvas – ViewHeatmap.js
ViewHeatmap.js is a JavaScript library that generates a CANVAS based heat map on your webpage screenshot to visualize how far the visitors scroll down your page.