This small JavaScript demo lets you draw a polygon with mouse clicks and detect whether the cursor is inside or outside the shape in real time. It uses SVG (Scalable Vector Graphics) and basic geometry to achieve this. Tested on Firefox, Chrome, and Edge browsers.
File location: https://github.com/nurbs3000/july2025...
On this page of the site you can watch the video online Detect Mouse Inside or Outside a Polygon. JavaScript tutorial. with a duration of hours minute second in good quality, which was uploaded by the user base case 14 July 2025, share the link with friends and acquaintances, this video has already been watched 23 times on youtube and it was liked by 0 viewers. Enjoy your viewing!