How to connect JavaScript with Tableau view?

Question

I am new to Tableau. I have a task to connect a speedometer code written in javascript with tableau dashboard. The code will take excel sheet as input and according to that the dashboard should modify. I know it has something to do with javascript API, but I need some help. It should work something like this link given below http://mkt.tableausoftware.com/community/page/TablesInTheEastGame/TITETG.html

Appreciate any suggestion on how to accomplish the task.

Answer 1

Consider starting with the Javascript API overview http://onlinehelp.tableausoftware.com/current/server/en-us/help.htm#js_api.htm

And this very clear interactive tutorial http://onlinehelp.tableausoftware.com/samples/en-us/js_api/tutorial.htm