I am making an HTML textarea that accepts tab key input using JavaScript.
When I searched for a solution on the web, I found this answer, but after some fiddling, I found out that ctrl+z stops working after I hit tab key.
Doing some more experiments revealed that changing the value attribute was likely the culprit of this problem. Here is a small scale code example that you can hopefully reproduce this behavior yourself.
https://codepen.io/MartianLord/pen/gORKPGp?editors=1010
I managed to find a workaround using document.execCommand to simulate the user input, but this method is deprecated as you can see here, so I am looking for a more up to date solution.
To support ctrl+z while using tab in <textarea>, you need to implement undo, redo functions to connect with <textarea>. When the <textarea> changes, record the changes in the history, and revert when ctrl+z key input occurs.
UndoRedojs is a library for this task.
I think there will be a lot of work to be done, such as setting the selection position, in order to fully implement it. I recommend using a text editor that has already been created.