Draw the correspondence between two sets (function)

Every time I had to create test questions for first-year high school math, drawing the function mapping relationships was cumbersome. Despite searching, I couldn't find any software that would automatically and simply visualize the relationship between the domain and codomain. Tired of manually drawing each one, I decided to create a program that can easily visualize the correspondence between two sets.

Program Link

https://ngryun.github.io/Function-Mapper/

Instructions:

1. 1. Domain Entry Enter the elements like a,b,c separated by commas (,).

2. Codomain Entry Similarly, enter the elements like a,b,c separated by commas (,).

3.Enter the Mapping Relationship (Function Value) Enter in the format f(domain element)=codomain element, like f(a)=1, and the program will automatically create an arrow for you.

inverse function