No-Library (pure JS), HTML, CSS, JavaScript
https://medium.com/@_jh3y/how-to-where-s-the-caret-getting-the-xy-position-of-the-caret-a24ba372990a
jQuery (edge), HTML, CSS, JavaScript
Get INPUT and TEXTAREA Caret XY Coordinate.
jQuery 1.9.1, HTML, CSS, JavaScript
No-Library (pure JS), HTML, SCSS, JavaScript
No-Library (pure JS), HTML, CSS, Babel + JSX
author(s): Torstein Hønsi