js获取网络时间

//时间格式如Thu, 19 Dec 2019 18:03:47 GMT
var date = dateTimeFormate($.ajax({
    
    async:false}).getResponseHeader("Date"));
//格式化从服务器端取到的时间
function dateTimeFormate(date) {
    
    
	var d = new Date(date);
	var year = d.getFullYear();
	var month = d.getMonth() + 1;
	var day = d.getDate();
	var hour = d.getHours();
	var minute = d.getMinutes();
	var second = d.getSeconds();
	var formateDate1 = year + "-" + p(month) + "-" + p(day) + " " + p(hour) + ":" + p(minute) + ":" + p(second);// 带时分秒
	// var formateDate2 = year+"-"+p(month)+"-"+p(day);//不带时分秒
	return formateDate1;
}