How to detect key pressed in TypeScript?

For React Users

  private onKeyDown = (e: React.KeyboardEvent<HTMLDivElement>) => {
    console.log(e.key)
  }

where HTMLDivElement is the type of whichever element onKeyDown is attached to.

Here is the List (from line 32-90) of all supported HTML elements.

You need to use the more specialised event type KeyboardEvent, as shown below:

myFunc(data : string, evt : KeyboardEvent)

If you want to also remove errors for evt.enterKey you'll need to add it by extending the interface - although I'm not aware that this is a real property as it isn't technical a control key, like CTRL, SHIFT or ALT, which all have properties on the event:

interface KeyboardEvent {
    enterKey: boolean;
}

You need register the event, for example:

class EventHandler {
    static RegisterKeyPress(input: string){
        document.getElementById(input).addListener('keypress', (e: KeyboardEvent) =>{
           //You have yout key code here
            console.log(e.keyCode);
        }
    }
}

Happy coding!