var b = function(){alert(1)}
var a = function(v1,v2){v2()}
a(1,b)
比如<javascript>
function funckb(obj){
alert(obj.value)
alert(obj.id)
alert(obj.type)
alert(obj)
}
</javascript>
<input id="ckb1" type="checkbox" onclick="funckb(this)" value="有用值" />