A Javascript version of Alexander Schiendorfer's blog post "A worked example of backpropagation".
https://alexander-schiendorfer.github.io/2020/02/24/a-worked-example-of-backprop.html
Download toynet.js and run with Nodejs (for example).
The code is generalised a bit so the shape of the network can be changed.
By default it runs the batching example on (A4 size) page 33.
[C:\projects\toynet\trunk]node toynet.js
outputs after 200 epochs, see page 33
0.9460731161243365 0.04903030671319556
0.056063676671722545 0.9508238102520352
done