JavaScript - Part Four - Precision

The number system is such an intrinsic part of JavaScript that you should understand it. If you're doing anything with money, you need to know about precision and big ends. Math is imaginary, it's not real. It's just something we make up to approximate the real world. So putting it in a real processor that exists in the real world is difficult. We moved to frameworks. What do you think guys doing? Is knowledge of framework required knowledge for JavaScript developers these days?