Trigger a keypress/keydown/keyup event in JS/jQuery?

Question

What is the best way to simulate a user entering text in a text input box in JS and/or jQuery?

I don\'t want to actually put text in the input box,

Answer 1

For typescript cast to KeyboardEventInit and provide the correct keyCode integer

const event = new KeyboardEvent("keydown", {
          keyCode: 38,
        } as KeyboardEventInit);