Neuroevolution of Augmenting Topologies in JavaScript

Joshua — Sun, 14 Dec 2025 23:04:58 +0000

This project is a JavaScript-based implementation of NEAT (Neuroevolution of Augmenting Topologies), an evolutionary algorithm developed by Kenneth O. Stanley and Risto Miikkulainen. Originally introduced in their 2002 paper, Evolving Neural Networks Through Augmenting Topologies, NEAT presents a novel approach to evolving artificial neural networks by optimizing both network weights and structures over generations.

It runs in both NodeJS and browser environments allowing for some cool visual demo's:

Chrome Dino game: https://neat-javascript.org/examples/dino.html
Self-driving car: https://neat-javascript.org/examples/self-driving-car.html
Flappy Bird: https://neat-javascript.org/examples/flappy-bird.html
Pole balancing: https://neat-javascript.org/examples/pole-balancing.html
Snake: https://neat-javascript.org/examples/snake.html
Ant simulator: https://neat-javascript.org/examples/ant-simulator.html
XOR: https://neat-javascript.org/xor.html

Very happy to share this here:) Thanks

GitHub: https://github.com/joshuadam/NEAT-JavaScript
Docs: https://neat-javascript.org

Visual AI Simulations in the Browser: Cars, Predators & Prey (NEAT Algorithm)

Joshua — Mon, 17 Mar 2025 05:45:20 +0000

Hey!
I recently made an implementation of the NEAT algorithm in JavaScript! It's an evolutionary algorithm originally introduced in 2002 by Kenneth O. Stanley and Risto Miikkulainen in their paper Evolving Neural Networks Through Augmenting Topologies.

This basically allowed me to make some cool visual demos showcasing how AI learns which can all run in the browser!
Some examples include:

I just wanted to share these because I think it's pretty cool to see! If you want to learn more about the project you can look at the GitHub repo!

If you want to learn more about the algorithm I highly recommend reading the original paper. Or watching a youtube video explaining everything! It is called the NEAT (Neuroevolution of Augmenting Topologies) algorithm. (This is a pretty good video explaining everything)

DEV Community: Joshua

Neuroevolution of Augmenting Topologies in JavaScript

Visual AI Simulations in the Browser: Cars, Predators & Prey (NEAT Algorithm)