复制代码 代码如下:

var testButton=document.getElementById("testButton");

function handlerTest()

{

var oEvent=window.event;//for IE

//var oEvent=arguments[0];// for DOM

if(oEvent.type=="click")

{

alert("click");

}

else if(oEvent.type=="mouseover")

{

alert("mouseover");

}

else

{

alert(oEvent.keycode);

}

}

testButton.onclick=handlerTest;

testButton.onmouseover=handlerTest;

html元素如下：<input id="testButton" type="button" value="testButton" />