Js 验证时间格式是否正确

function RQcheck(RQ) {
var date = RQ;
//(-|\/)分隔符
var result = date.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/);

if (result == null)
return false;
var d = new Date(result[1], result[3] - 1, result[4]);
return (d.getFullYear() == result[1] && (d.getMonth() + 1) == result[3] && d.getDate() == result[4]);

}

function CheckAdd() {
var ret = true;
if (!RQcheck($id("txt_LLRQ").value)) {
alert("请输入正确的日期");
return false;
}
return ret;
}