description

# KeyboardEvent constructor Null safety

KeyboardEvent(

1. String type,
2. {Window? view,
3. bool canBubble: true,
4. bool cancelable: true,
5. int? location,
6. int? keyLocation,
7. bool ctrlKey: false,
8. bool altKey: false,
9. bool shiftKey: false,
10. bool metaKey: false}

)

Programmatically create a KeyboardEvent.

Due to browser differences, keyCode, charCode, or keyIdentifier values cannot be specified in this base level constructor. This constructor enables the user to programmatically create and dispatch a KeyboardEvent, but it will not contain any particular key content. For programmatically creating keyboard events with specific key value contents, see the custom Event KeyEvent.

## Implementation

    factory KeyboardEvent(String type,
        {Window? view,
        bool canBubble: true,
        bool cancelable: true,
        int? location,
        int? keyLocation, // Legacy alias for location
        bool ctrlKey: false,
        bool altKey: false,
        bool shiftKey: false,
        bool metaKey: false}) {
      if (view == null) {
        view = window;
      }
      location ??= keyLocation ?? 1;
      KeyboardEvent e = document._createEvent("KeyboardEvent") as KeyboardEvent;
      e._initKeyboardEvent(type, canBubble, cancelable, view, "", location,
          ctrlKey, altKey, shiftKey, metaKey);
      return e;
    }