Should I use it?

We will now show you the functionalities that customJS provides and its (dis)advantages by looking at 4 different scenarios. One where customJS is not needed, one where customJS could be a good addition, and one where it is compulsory to use customJS.

For those of you keep track, yes, we have only counted to three. The forth scenario is Marketing calculators. Marketing calculators require customJS but they are so different to regular calculator that they deserve their own section.

• CustomJS is uncalled for
• CustomJS is desirable
• CustomJS is compulsory
• Le Marketing (surrender your freedom for a greater good)