How to convert float into byte array?

Question

I want to convert a float value like 26,4 into a byte array. Something like: [51,51,-45,65]. Another example: 32,2 > [-51, -52, 0, 66].

I can do it in Arduino C++ and Python, but I don't see how to do it in JavaScript.

I have an input field in my HTML page where I want to write my float value and decode it before sending it to a Python script.

Is it possible?