如何捕获onkeydown事件的退格 [英] How to capture a backspace on the onkeydown event

问题描述

我有一个由 onkeydown 文本框的事件。如何判断用户是否按了退格键或del键？

I have a function that is triggered by the onkeydown event of a textbox. How can I tell if the user has hit either the backspace key or the del key?

推荐答案

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;
   }
}

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