The clew of the jib is often tied into a knot at the middle of the jib sheet. Simple and effective, but you need to completely remove the jib sheet when you want to remove the sail.
You could tie a loop in the middle of the jib sheet, and use a shackle to connect to the clew. Works, but now you have a piece of metal flying about when the sail flogs.
Alternative is a rope shackle. There are different designs. I made mine from a short length of Amsteel which is very light, even at a bit larger diameter, and easy to splice and knot. I put an eye splice at one end, and a manrope knot at the other end. That sounds more complicated than it is - if you want to fill a rainy evening with it, better make some for your friends as well.
When I push the knot through the splice, I have a loop, and any amount of tension will lock it (I made my eye splice tight enough that it takes some force to push the knot through, but that might not be necessary).
Anyway, that forms a loop. To tie the loop to the jib sheet, I use a Prusik knot, which is not one of the standard sailing knots, yet really easy to tie. A Prusik knot is a sliding knot, remotely related to the rolling hitch, but symmetric.
Now all I need to do to attach my jib is to push the eye splice through the clew cringle, and lock it with the toggle. I can leave the jib sheet rigged - which not only saves time, but allows the crew to remain on the deck for the entire operation - no more crawling all over the boat to find the ends of the jib sheets and undo the figure eight knots
Because the Prusik knot could slide when not loaded, I marked the center point of the jib with tape, but it's stayed put so far.