js 获取服务器时间出错获取1970问题

其实出现1970-01这个问题最终是浏览器的兼容问题，由于IE浏览器的缓存机制，导致请求头没有请求到，所以返回计算机的默认时间1970-01
有bug的代码：
var stuVdate = new Date($.ajax(async:false).getResponseHeader("Date"));//取得当前时间functiondateTimeFormat(date)vard=newDate(date);varyear=d.getFullYear();varmonth={(}^{\prime }{0}^{\prime }+(d.getMonth()+1)).slice(-2);varday={(}^{\prime }{0}^{\prime }+(d.getDate())).slice(-2);varhour={(}^{\prime }{0}^{\prime }+(d.getHours())).slice(-2);varminutes={(}^{\prime }{0}^{\prime }+(d.getMinutes())).slice(-2);varseconds={(}^{\prime }{0}^{\prime }+(d.getSeconds())).slice(-2);returnyear+"-"+month+"-"+day+""+hour+":"+minutes+":"+seconds;解决后代码：varstuVdate=dateTimeFormat($.ajax({async:false}).getResponseHeader(“Date”));
//取得当前时间
function dateTimeFormat(date){
var d = new Date(date);
var year = d.getFullYear();
var month = (‘0’ + (d.getMonth() + 1)).slice(-2);
var day = (‘0’ + (d.getDate())).slice(-2);
var hour = (‘0’ + (d.getHours())).slice(-2);
var minutes = (‘0’ + (d.getMinutes())).slice(-2);
var seconds = (‘0’ + (d.getSeconds())).slice(-2);
return year + “-” + month + “-” + day + " " + hour + “:” + minutes + “:” + seconds;
}
相当于关闭浏览器的缓存，而加入type:"HEAD"是为了请求更快，默认为请求头