I am making a hangman game. What I need is: Let's say the player wrote a then b then c. These letters should be stored on a list like {"a","b","c"} so I can show the player which letters he used. English is not my native language sorry for my English.

codepen: https://codepen.io/huseyinyeldan/pen/RwjgodL

Website Link: https://yeldanhangman.netlify.app/