<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<TITLE> Clusure Demo </TITLE>
<script type="text/javascript">
// i 为实参 index 为形参
function attachEvent4link()
{
for(var i=1; i <4; i++)
{
document.getElementById("a"+i).onclick=(function(index){
return function(){
alert(index);
}
})(i);
};
}
</script>
</HEAD>
<BODY onload="attachEvent4link()">
<a href="javascript:;" id="a1">a1</a>
<a href="javascript:;" id="a2">a2</a>
<a href="javascript:;" id="a3">a3</a>
</BODY>
</HTML>
