Modern Split View In JavaScript – Split.js
Split.js is a lightweight vanilla JavaScript library used to create resizable split views that support CSS float, flexbox, and Grid layouts.
JavaScript & CSS split layout
Resizable Split Layout In Pure JavaScript – Resizable.js
Resizable.js is a pure JavaScript library to create a resizable split layout where you can adjust the size of each ‘Window’ via drag and drop or touch events.
Basic Split Layout In Vanilla JavaScript – SplitterBar
A responsive split layout plugin in vanilla JavaScript that allows you to adjust the width of the split panels by dragging the splitter bar.