javascript - 如何在 onkeydown 事件中捕获退格键

Question

我有一个由 onkeydown 触发的函数文本框的事件。如何判断用户是按了退格键还是按了 del 键？

Answer 1

试试这个:

document.addEventListener("keydown", KeyCheck);  //or however you are calling your method
function KeyCheck(event)
{
   var KeyID = event.keyCode;
   switch(KeyID)
   {
      case 8:
      alert("backspace");
      break; 
      case 46:
      alert("delete");
      break;
      default:
      break;
   }
}