As we discussed in class, one of the advantages of text boxes over prompts is persistence and modifiability. If the user enters input into several text boxes, those values persist in the boxes. If the user changes their mind or wants to reexecute code based on new values, they can simply edit the appropriate text boxes and reexecute.
Create a new version of your grades.html page that uses text boxes for inputing the user's grades. As before, there should be one text box for homework grades, one for quiz grades, one for tests, and one for the final exam score. The output of your program, which should include the homework and quiz averages, should be displayed in a separate frame in the page.