説明

• keydown event：鍵盤按下時→觸發動作
• keyup event：鍵盤按下後鬆開→觸發動作

 

p Press any key
p#pressStatus

window.addEventListener("keydown", function(e){
 pressStatus.textContent=`Key code of ${e.keyCode} is pressed`;
})

window.addEventListener("keyup", function(){
 pressStatus.textContent=`Now you left the key`
})

Display

Press any key