How do you plan to solve it?
module jk_ff ( input CLK, input J, input K, output reg Q ); // Write your code here always@(posedge CLK) begin if(!J&&!K) Q <= Q; else if(!J&&K) Q <= 0; else if(J&&!K) Q <= 1; else if(J&&K) Q <= ~Q; else Q <= Q; end endmodule