I have a project in C#.net using a WPF textbox that validates a character like * as the first character entered. If this character is entered, the rest of the text is good but I cannot show nor use th...

I' currently studying js and DOM and there is something about the eventListener I really don't understand.Here's my problem. I create a function that takes one argument, check if that arguments is equ...

My intention is to make div when keydown, and remove div when the same key is pressed again. This is my code. let keydown = false; document.addEventListener('keydown', function(e) { if (e.code...

I'm trying to do a little script that allows a user to automatically creates a div once the tab button is pressed and the focus is on the y input. That div is a duplicated of the previous div. I don't...