I need help removing the added images at random intervals

Assignment prompt: One of the few tasks which remains is to make the randomly appearing images, disappear at random! Each randomly added image should also disappear after a separately random time. There are several techniques which would solve this problem. Any will do$.$ One such method requires you to generate unique IDs dynamically.

Here is my code:

function addImage$()\{$

let xPos $=$ getX$()$;

let yPos $=$ getY$()$;

$$("$#gamespace"$).$append$(\text{'}\text{'})$;

count $++$;

addImageInterval $=$ setTimeout$($addImage$,$ randImage$(0,2000))$;