How do you construct a jk flip-flop from a t flip-flop?

Its very simple. All you have to do is short J and K inputs i.e. same inputs go into both J and K.
Actually T flip flop is the special case of J-K flip flop when both the inputs of J-K flip flop are equal to 1 ( or logic high) j=k=1. Know electronics has well explained about its designing. A very good use of this flip flop or J=K=1 condition is in counters.

The J-K flip flop is universal and can be used to make any of the other times. I agree with know electronics and VKP that it can be used in counters. Adding the practical use of conversion here . When you are working on ASIC or SOC Design, In the ECO stage if you want T or D flipflop and you have only JK flipflops then this conversion techniques can be helpful. similarly MUX conversions are helpful in realizing computational gates

Wow the answer was a on e dgenuity, ignore the other autistic answers 

Discord1.on desktop, download the discord app and open it.2.click connections in the menu on the left.3.click spotify.4.a web page will open to connect. if you're not already logged into spotify on the device, you're directed to log in or sign up first.5.click okay to confirm.