Javascript keyboard event combination usage implementation code_javascript skills

txt1: The object to which the event is bound, for example: a text input box input.

oevent: event object (contains many useful details of the event).

keyCode: You can get the key value pressed on the keyboard. For example: the Enter key is 13.

ctrlKey: is a Boolean value, indicating whether the ctrl key on the keyboard is pressed. (Of course: altKey, shiftKey).

The above code means: press the ctrl and enter keys to execute the statement in the ellipsis.