Sidemenu link land to same page but show different data

Hello guyz,

Can anyone tell me if i keep same landing page for multiple links and just want to change data… How can system identify which link was clicked so that data can be rendered accordingly…

for eg: I create a grid menu of different category, and every link goes to data.html page but with different link different data is showed so how can i know which link was pressed so that my controller can show the data according to that category