我想给checkbox用js注册一个onchange事件来监听它的状态的变化，该怎么样写？

HTML:
<%: Html.CheckBox("IsTime", false, new { onpropertychange = "checkChange();", Value = "huerreson" })%>

JS:
function checkChange() {
var checkState = $("#IsTime").attr("checked");
if (checkChange == true) {
alert("Checked");
} else {
alert("unchecked");
}
}

<input type="checkbox" onchange="Check()" name="listen"/>
<script language="javascript">
function Check(){
alert("ddddddddddd");
}
</script>