Website Mortgage & Insurance Calculator = Javascript?

Gorseempirm

New Member
I'm working on a website with Joomla for a small financial services company. I need to implement a simple mortgage and insurance calculator and I have no clue where to start. With Joomla, I can create custom HTML modules and implement them wherever I want. I looked through other sites and Javascript looks like the language of choice.Is Javascript the only way to build the calculator!? Is there ANY way I can do this using html!?
 
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