event.preventDefault cannot block clipboard paste in chatgpt.com prompt box

I’m using following code to block paste to certain webpages:

event.preventDefault cannot block clipboard paste in chatgpt.com prompt box

I’m using following code to block paste to certain webpages:

event.preventDefault cannot block clipboard paste in chatgpt.com prompt box

I’m using following code to block paste to certain webpages:

event.preventDefault cannot block clipboard paste in chatgpt.com prompt box

I’m using following code to block paste to certain webpages: