how can I change the price of a product with jquery

[jemmeli]

hello,

 

I developped a module that allow a client to customize a t-shirt by adding pattern and text over it from the front office like do the infobia module , http://demo.infobia.tn/home/8-casquette-.html

 

but when it comes to chnaging the price by increment it for each text or pattern add I felt blocked i did'nt found any way to do it who can help me how can i do this ?

 

at least how can i proceed to do it if it possible, and thank you in advance for the help