Would you like to try out Elm in an existing project? A full rewrite is too risky? Just embed a little Elm node and see how it goes. You can grow it or revert if depending on how it goes. No big deal either way!
The following code shows how to embed Elm programs in many of the popular JS frameworks. Just copy the relevant code into your project and go from there:
Be sure to read about JavaScript interop in the official guide. It will explain exactly how these code snippets work and give you the confidence to edit them.