js获取当前时间为整点，没有时分秒

<script type="text/javascript">
    var t = new Date();
	var now = t.toLocaleTimeString().replace(/^\D*/, '')
	var num = now.indexOf(':');
	var time = now.substring(0, num) + ":00:00";
	console.log(time);
</script><script type="text/